Best Dive Computer | Dive Computer Buying Guideline of 2020

A dive computer will be your adventure companion. And this is where we come in. Our purpose is to make sure you find everything you need to enjoy this wonderful world that is diving. In this case, we will help you choose the best dive computer that best suits your needs. Buying a dive computer can be a complicated decision, it does not matter if it is your first computer or if you are a diver of advanced level looking for another, you want the best one. There are so many different types, brands, and features to choose from, finding the best one for you may seem almost impossible. That is why we have created this list with the best models and features on the market. In addition, we will explain what to look for while you buy a dive computer and how to find the one that suits you best.

What is a Dive Computer for?

Actually, the operation of a dive computer is very complex: through a series of algorithms, the computer quantifies various data related to our safety while we are in the water. Thanks to sensors that allow you to measure depth, pressure, temperature and time (among other data), a diving computer can perform functions such as: Functions of dive computers
  • Check the time we have been submerged, as well as the rest until we have to perform a decompression
  • Manage the ascent , knowing the time we will need to do it
  • Knowing how deep we are , at what maximum depth we have been and at what depth we must make a decompression stop
  • Check the water temperature
  • Warn, through visual or even acoustic alarms , for any situation that requires our attention with respect to diving
As you can see, dive computers are quite advanced devices that allow you to control many types of data at the same time. In addition, we find connectivity functions in many of them, which allows us to have a “logbook” recorded on our mobile or PC.

Tips Before Buying a Diving Computers

Today it is very easy to find a wide range of diving products, so it is important to know some characteristics that My scooter considers important to check before buying a good quality diving watch. For us there are 8 key factors to see and we will detail them below:

  1. Experience level: You will have to ask yourself what is your skill level as a diver. Professional divers obviously require much more advanced technology than someone new to the sport. Beginners are likely to overpay for features they will never use if they opt for the best model on the market. Make sure you don’t just think about now and instead plan how you expect your diving to progress in the near future. Advanced divers will want to go for a dive computer that is more at their skill level making sure it has the key features they want, like air integration.
  2. Budget: Before beginning your search for a diver watch, it is important to consider how much you are willing to pay. This will help narrow the range of watches available within your budget. We recommend that you try to be as flexible as possible with your dive computer as it is not something we think should be made cheaper. Your safety in the water is the most important and its efficiency can in many cases save our lives. If your budget is not an issue, then be sure to buy the highest quality.
  3. Easy read: A dive computer is only useful if you can read and access the information it gives you. Be sure to check that your computer has a backlight that makes it easier to read, as well as a wide-angle color display. Also be sure to check that the size of the digits is large enough so that you can easily read it.
  4. Nitrox compatibility: We recommend that you select a watch that is integrated with nitrox. These types of watches allow you to dive with air or nitrox, giving you the freedom to dive so you can choose your choice.
  5. Data transfer: Many divers enjoy the option of uploading their dive log to a home computer or laptop. This allows you to safely transfer all of your data and graphics to your computer to provide you with an easy tracking tool to see the progress of your dives. This allows you to load your time, depth, ascent rate, air consumption rates, and nitrogen percentage.
  6. The digital compass: A digital compass will allow you to see the direction it is heading. Having it built into your computer allows you to conserve space. Analog versions require additional space in your arm to incorporate them. The only disadvantage of having it incorporated is that it can be altered by any type of magnet.
  7. Replaceable batteries: We strongly recommend that your dive computer has a replaceable battery system. This will ensure that you have enough energy for all your dives throughout the day. You can even have a second set to replace the dead battery. Make sure to always carry the charging cable with you anyway in case you don’t have enough power to charge it.
  8. Guarantee: One way to know the quality of the diving watch is through the guarantee it offers. The vast majority of dive computers have a one or two year warranty from the brand. It should be one thing you should check before making the purchase. A longer warranty indicates that the materials in the product are of very good quality. Look for models with these characteristics because in the end, you will end up appreciating it.

Best Dive Computers - Our Choice

IMAGEPRODUCTDETAILS
  • Ideal For : Beginners and Advanced
  • Gases : Air and Nitrox
  • Integrated Wireless Air: Yes
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  • Ideal For : Beginners and Advanced
  • Gases : Air and Nitrox
  • Integrated Wireless Air: No
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  • Ideal For : Beginners
  • Gases : Air and Nitrox
  • Integrated Wireless Air: No
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  • Ideal For : Advanced divers and technical divers
  • Gases : Air / Nitrox / Trimix / CCR
  • Integrated Wireless Air: Yes
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  • Ideal For : Beginners, Advanced,
  • Gases : Air, Nitrox and Trimix
  • Integrated Wireless Air: Yes
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  • Ideal For : Advanced divers
  • Gases : Air and Nitrox
  • Integrated Wireless Air: Yes
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  • Ideal For : Beginners
  • Gases: Air and Nitrox
  • Integrated Wireless Air: No
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  • Ideal For: Beginners
  • Gases : Air and Nitrox
  • Integrated Wireless Air: No
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  • Ideal For : Beginners and Advanced
  • Gases : Air and Nitrox
  • Integrated Wireless Air: No
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  • Ideal For : Any diver
  • Gases : Air and Nitrox
  • Integrated Wireless Air: No
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1SUUNTO D5 Scuba Diving Wrist Computer with USB Cable PVD Coated

SUUNTO D5 Scuba Diving Wrist Compute

Features

  • Ideal For:  Beginners and Advanced
  • Gases: Air and Nitrox
  • Integrated Wireless Air:  Yes
  • Gas Mixture:  3 gases, O2 up to 99%
  • Others: Planner and record of your dives, vibrating alarm , digital compass, Wireless connection with the phone, submersible up to 100 meters, interchangeable straps.

Suunto is one of the best and most trusted brands when it comes to dive computers. We have been amazed with models like the ZOOP NOVO or the D4i and the D5 is no exception.

Below, we explain our reasons for choosing it as the best dive computer this year.

Let’s start with the ease of use, the D5’s three-button layout is so simple and intuitive that you can safely navigate menus even before looking at the manual.

The high-contrast color display uses reflective technology that improves visibility in a wide range of light, easily visible in bright sunlight. Most of the time this is the weak point for color screens.

It is submersible up to 100 meters, has a wireless pressure gauge on the bottle, a digital compass. In addition, you can sync it via wireless connection with your smartphone and you can save all your data and records through Bluetooth on your PC / MAC.

The memory can store up to 200 dives or 400h of diving. Wireless air integration is optional. It is translated in 18 languages. It is also possible to mix up to 3 gases in the same dive.

As for the battery, it is rechargeable, it can last from 6 to 12 hours in dive mode and up to 6 days in watch mode.

Compatible with the Suunto app, designed to help you relive your underwater adventures and share them with your friends. With the History Dive you can see all your dives, records and other data that interests you.

Last but not least, its price is not as high as others with the same characteristics or less.

It is a daily use computer, with interesting features and functions at a reasonable price. No matter what your level is or where you dive, the Suunto D5 will be an excellent companion for your adventures.

If none of these reasons still do not convince you, it does not matter, we have 9 other options for you.

Things we liked

  • Versatile
  • Very easy to read and use
  • Digital compass
  • Rechargeable battery
  • Good price
  • Wireless Mobile Connection
  • Bluetooth

Things we didn't like

  • You have to recalibrate the compass every time you recharge the battery
  • Not recommended for backup computer

2Mares Puck Pro Wrist Dive Computer for Scuba Diving

Mares Puck Pro Wrist Dive Computer

Features

  • Ideal For:  Beginners and Advanced
  • Gases: Air and Nitrox
  • Integrated Wireless Air:  No
  • Gas Mixture:  3 gases, O2 up to 99%
  • Others: Single Navigation Button, Fresh Salt Water Settings, Alarm, Calendar.

This computer offers three basic operating modes, easy to navigate menus, and a large screen, making it an excellent choice for new divers.

The Puck Pro  also allows you to adjust your diving limits, in case you want to choose a more conservative profile for greater safety.

It is very durable, it is made of rubber and plastic, it can resist the use of daily diving and in difficult conditions. Also, when you improve your skills it may one day be your backup computer.

It may not be the most elegant design but it is one of the best low budget computers on the market, and rugged enough to last for years.

Things we liked

  • Easy to use and read
  • The cheapest on our list
  • User replaceable battery
  • When leaving the water it turns off to save battery
  • A good option for beginners

Things we didn't like

  • Heavy and bulky
  • USB cable is purchased separately

3SUUNTO Zoop Novo Wrist Dive Computer

Features

  • Ideal For: Beginners
  • Gases: Air and Nitrox
  • Integrated Wireless Air:  No
  • Gas Mixture: 2 gases, O2 up to 50%
  • Others: Four navigation buttons, Air mode, Nitrox, Gauge and Freedive Planner and record of your dives, alarms.

This great Suunto model is, in our opinion, the best choice for beginners. This is one of the most basic computers on the market, with four easy-to-use operating modes.

The screens are large and easy to read, the menus are very intuitive which makes it perfect for beginners and divers who wear glasses.

The  Zoop Novo has a super conservative preset dive profile, which is why we don’t recommend it for advanced divers, as they may feel a bit limited underwater. However, this additional security feature is ideal for newly certified divers and students.

If you like to get the most out of your team, the  Zoop Novo is for you. This model has a super tough outside a user-replaceable battery and wrist strap resistant compatible with a drysuit.

The  Suunto Zoop Novo will allow you to start and grow without a new dive computer in the short term.

Things we liked

  • Easy to use and read
  • Good price
  • Can be placed on the console
  • Cold water compatible
  • Durable

Things we didn't like

  • Non-user-replaceable batteries
  • The buttons are very small, it will be difficult for you to press them if you wear gloves
  • USB cable is purchased separately

4SUUNTO Eon Core Wrist Computer with USB

SUUNTO Eon Core Wrist Computer with USB

Features

  • Ideal For: Advanced divers and technical divers.
  • Gases: Air / Nitrox / Trimix / CCR
  • Integrated Wireless Air:  Yes (Up to 10 different tanks with Suunto Tank POD).
  • Gas Mixture: 10 gases, O2 up to 100%
  • Others: Planner and record of your dives, alarms, 3D compass, color screen, compatibility with PC / Mac

The Suunto Core EON  is one of our favorite dive computers. This wonderland from Suunto features a bright display, an easy to customize interface, and a rechargeable battery. Designed by professional divers, it will surely meet your most demanding expectations.

Thinking about control and usability, Suunto has developed a dive computer that evolves with the diver as his diving skills improve over time.

This is possible thanks to the fact that you can choose between a classic interface and a graphical interface according to your preferences, and configure the plugins as you wish.

You can see the data you want and need, customizing up to four display settings. You also have the option of choosing between a wrist strap or an elastic strap.

If that’s not enough, it also offers an impressive 10-gas mixing ability, 3D compass, alarm notification system, altitude adjustment, bottom timer mode and air integration (with the Tank POD Transmitter ), the Eon will surely It will impress any professional diver.

With Suunto Dm5 it  is possible to download and update the software as new versions are released and to plan your dives.

Even if you wear very thick diving gloves , the three-button interface is easy to use, and the Bright see display allows you to read at any angle and lighting condition.

The Eon also boasts the best depth rating, guaranteed to operate up to 150 meters in a temperature range of 0 ° C to 40 ° C (32 ° F to 104 ° F).

The rechargeable battery will last 20 to 40 hours on a full charge and can be recharged using the Suunto charger or by connecting it to a PC / Mac.

Things we liked

  • Rechargeable battery
  • Digital 3D compass
  • Highly customizable
  • Compact
  • Up to 10 gas mixing options
  • Waterproof up to 150 meters

Things we didn't like

  • Expensive

5Shearwater Research Teric Wrist Dive Computer

Shearwater Research Teric Wrist Dive Computer

Features

  • Ideal For: Beginners, advanced, technical and recreational
  • Gases: Air, Nitrox and Trimix
  • Integrated Wireless Air: Yes (up to 2 transmitters)
  • Gas Mixture: 5 gases, O2 up to 100%
  • Others: Bluetooth LE, audible and vibrating alarm, Amoled screen, 5 operating Modes: Technical, Freedive, Recreational, Gauge and CC / BO digital compass and up to 5 gas mixture.

The Shearwater Research Teric together with the Suunto D5 is the most beautiful and elegant models on our list, it is no small feat if you are going to use your dive computer all the time.

Shearwater dive computers are known to be a top-tier option, and the Teric is one of the best on the market right now.

The Amoled glass screen is even brighter than the Co smiq +. This edge-to-edge display allows for large, clear text. Also, you can change the color of the letters and numbers, you have 15 colors to choose

You can use multiple gases with 5 customizable gases, 5 diving modes including an impact resistant 200 meters, a three-axis digital compass with tilt compensation.

The battery lasts up to 30 hours in dive mode and up to 50 hours in watch mode, it is the longest on our list.

Through the Bluetooth connection you can save all your records in the cloud. With that performance, this Shearwater computer should surely appeal to tech and experienced divers.

Although it offers many configurations and features, the user interface is intuitive and easy to use, and includes a base or dock to place it.

For some, the only drawback with this computer is the price. However, we believe that when it comes to evaluating performance and features, it doesn’t seem that expensive.

Things we liked

  • Customizable
  • Beautiful and elegant design
  • Easy to use and read
  • Excellent display
  • Rechargeable battery
  • Versatile

Things we didn't like

  • Expensive

6SUUNTO D4i Novo, Wrist Dive Computer, Scuba Diving Instrument w/USB

SUUNTO D4i Novo, Wrist Dive Computer, Scuba Diving Instrument w/USB

Features

  • Ideal For: Advanced divers
  • Gases: Air and Nitrox
  • Integrated Wireless Air: Yes
  • Gas Mixture: 3 gases, O2 up to 50%
  • Others: Apnea timer, Four modes: air, nitrox, apnea and off, PC compatibility, record your dives (up to 140 hours).

The Suunto D4i Novo is one of the most complete and best models on the market. This compact wristwatch offers various modes of operation such as gas mixing, alarms and profiles that are easy to customize. All these diver-friendly details on your wrist.

It is important to note that this dive computer is not recommended for beginners. The four button and menu design is complex, it is best suited for intermediate to advanced level divers.

The D4i Novo is also one of the most stylish options out there, with different colors and straps to choose from. Also, you can wear it as a wristwatch for daily use. As for the price, it is a bit high but worth it for everything it offers.

Things we liked

  • Light and comfortable
  • Can be used as a watch
  • Easy to use

Things we didn't like

  • Non-user-replaceable batteries

7Aqua Lung i300C Dive Wrist Computer

7Aqua Lung i300C Dive Wrist Computer​

Features

  • Ideal For: Beginners
  • Gases: Air and Nitrox
  • Integrated Wireless Air: No
  • Gas Mixture: 3 gases, O2 up to 50%
  • Others: Bluetooth, activates as soon as it comes into contact with water, Planner and record of your dives, alarms, 4 modes: Air, Nitrox, Gauge and Free Dive, you can change up to 3 gases underwater

In addition to its beautiful design, the Aqua Lung I300C offers all the functions you expect from a computer, making it one of the best on the market. This is a simple and easy to use the computer.

The big screen is divided into many different sections that give you quick access to all the options and data you need.

No matter what type of air you dive with, including trimix, the I300c can give you accurate readings of the stats that matter most to you.

The algorithm that Aqua Lung offers allows you to control your decompression to perfectly synchronize the rise to the surface.

You can connect the computer to your PC or Mac to view your diving statistics using the DiverLog program offered by Aqua Lung. This will allow you to compare your dives and show you where you can improve.

Also, with History mode you can see the total number of dives, maximum depth, total diving hours and lowest temperature. The altitude is automatically adjusted. And it allows you to configure it to dive in fresh or salty waters.

It is a reliable and affordable computer, perfect for a beginner diver, it will cover your needs for many dives.

Things we liked

  • Easy to use and read
  • User replaceable battery
  • Very bright backlight
  • Bluetooth to access data and settings
  • Underwater gas change

Things we didn't like

  • The buttons are difficult to press if you wear gloves
  • DiverLog is purchased separately

8Cressi Leonardo Underwater Diving Computer, Created in Italy, Quality Since 1946

Cressi Leonardo Underwater Diving Computer, Created in Italy, Quality Since 1946

Features

  • Ideal For: Beginners
  • Gases: Air and Nitrox
  • Integrated Wireless Air: No
  • Gas Mixture: 2 gases, O2 up to 50%
  • Others: Oxygen toxicity indicator, a single navigation button, PC / MAC compatibility, record of your dives, alarms.

The Cressi Leonardo is a simple and functional dive computer, a good choice for beginners.

It comes with a single button for all its menus and settings, making it very easy to operate. The edge-to-edge high definition display makes this dive computer easy to read while remaining compact.

The battery life is clearly indicated on the screen, so you can be sure that it will last long enough before your dive.

Includes 60-hour immersion memory and 70-hour log, to help you track your progress. With audible alarms, this dive computer is built with safety in mind.

This dive computer is capable of diving to depths of 120 meters and working with altitude settings of up to 3,700 meters, this watch effortlessly goes wherever you go.

You can restart it completely after each dive, something useful if you want to share it with your friends.

Things we liked

  • Easy to use
  • Battery saving mode
  • User replaceable battery

Things we didn't like

  • Backlight is not very bright

9Oceanic Geo 2.0 Wrist Computer

Features

  • Ideal For: Beginners and Advanced
  • Gases: Air and Nitrox
  • Integrated Wireless Air: No
  • Gas Mixture: 2 gases, O2 up to 50%
  • Others: 5 Operating Modes: Air, Nitrox, Freedive, Clock, Gauge. Compatibility with PC / MAC, alarm with red led flash.

This is one of the best Oceanic models. It has a very elegant and easy to use design. With a dual algorithm, deep stop option and four different operating modes, customizing this dive computer is easy.

Equipped with a 24-dive logbook (up to 99 in freedive dive mode), it allows you to track your dives. On- screen History mode allows you to track total number of dives, maximum depth, total dive hours, and lowest temperature.

In addition, you can access and save all your records on your PC or Mac by downloading Oceanic’s exclusive program, OceanLog.

Things we liked

  • Easy to read
  • Flashing LED alarm
  • User replaceable battery
  • When it comes out of the water, it turns off to save the battery.

Things we didn't like

  • Even with the backlight on it is difficult to read in poor visibility
  • USB cable is purchased separately

10Deepblu Cosmiq + Watch Computer

Deepblu Cosmiq + Watch Computer

Features

  • Ideal For: Any diver
  • Gases: Air and Nitrox
  • Integrated Wireless Air: No
  • Gas Mixture: No, O2 between 21% - 41%
  • Others: Bluetooth connection to synchronize data through the DeepBlu social app, 3 operating modes: Air, Nitrox and Freedive, maximum depth 100 meters.

Maybe DeepBlu is not a company you have heard of, but if you want an elegant dive computer that does it all and at a good price, then you should take a look at the Cosmiq + .

One of the things we like most about this computer is the screen, it is one of the best on the market (in our opinion) with 2.2 inches, large but not too bulky, so it does not feel uncomfortable on the wrist.

Although it is a standard LCD screen, it uses something called EBTN technology, so the screen is pixel-free, bright, and easy to read underwater.

It is designed for standard Air and Nitrox and DeepBlu has its own decompression algorithm based on the Bühlmann ZHL-16C model. If you use Nitrox, the settings can be adjusted between 21% and 40%.

Depending on your driving needs and abilities, you can use the conservative decompression algorithm, normal or progressive.

Advanced features let you track and share your dives via Bluetooth sync with your PC or phone with the DeepBlu social app. You can store up to 25 dives in its memory.

It uses a rechargeable lithium-ion that charges via a standard USB connection and the cable clips on the COSMIQ + with a magnetic connector, lasts 6 to 7 hours.

One of the biggest concerns with dive computers is changing settings with one or two buttons, with COSMIQ + you can view and change settings with the mobile app, making it much simpler.

A nice, affordable and easy to set up dive computer.

Things we liked

  • Bluetooth connection
  • The social app
  • Rechargeable battery
  • Easy setup
  • Versatile

Things we didn't like

  • The battery life is short

Which dive Computer to Buy?

What level of diving do you have?​

This is the first thing you have to think about before making your choice. What is my level of experience? Keep in mind, that it is not about buying what your friends use or the one that has more functions, the idea is to choose the one that best suits your needs.

If you are a beginner, we recommend buying a computer that is simple, durable, with a large screen and easy to use. When you start out in this underwater world, you should be more focused trying to get comfortable breathing and swimming underwater instead of being distracted by a high-tech computer.

For beginners our preferred option is the Suunto ZOOP NOVO, but there is also the Cressi Leonardo, the Aqua Lung i300c, the Oceanic GEO 2.0 

In case you are an advanced diver, you probably love to dive and keep your records it is important that you have a good memory. Finally, that it is durable, it must last for many years.

These are our recommendations: Suunto D5 , Suunto D4i NOVO , Shearwter Resarch Teric and Cosmiq +

If you are a technical or recreational diver , your needs are totally different. Having additional features like trimix capabilities is important to you. We recommend Suunto EON CORE and Shearwater Research Teric.

It's easy to use?​

There are computers that are easier to use than others. If you want to spend more time underwater and read your computer manual less, this is something to keep in mind.

Another thing that you should take into account is where you will use your computer mostly, in warm or cold water. In cold water, you will wear thick gloves, so make sure you have a computer with large buttons, otherwise it will be difficult for you to use it underwater.

Style and Settings

Dive computers come in one of two different configurations: wrist or console.

Wrist computers allow you to have all your important data on your arm. There are two styles of wrist computers.

The classic has a larger screen than an average watch, which makes it easier to read. The disadvantage of computers is the fact that they are not directly connected to your diving equipment and can easily get lost.

This style tends to be much more expensive compared to the classic ones. One of the main disadvantages of owning these types of computers is the small screen, which can be more difficult to read if you have vision problems.

Console types generally combine a pressure gauge, computer, and often a compass. They connect to your regulator via a hose, and are relatively larger, with screens larger than the wrist.

Console computers are not always integrated over the air wireless. To display the pressure reading, it must be directly connected to your tank via a hose or a hoseless transmitter.

Those that are not integrated by wireless air normally come with a manometer, also mounted on the console.

The fact of being connected to your team makes them much more difficult to lose. One of its main disadvantages is that they can burn batteries faster, as they sometimes activate when you don’t need them.

Integrated Wireless Air

Integrated wireless air is in vogue in the world of dive computers. This function allows you to control your air consumption on your computer with the use of a transmitter.

Some high-end models even allow you to monitor the remaining air of an entire group of divers.

The transmitter connects to the high-pressure port on the first stage of your dive regulator and wirelessly sends the information to your dive computer. These are ideal for a technical diver who uses multiple tanks on one dive.

A great benefit of wireless air integration is that it allows your dive computer to calculate your current breathing rate and based on your rate, it tells you how much time you have left.

Gas Mixture

In recent years, more and more divers are using higher oxygen (O2) mixtures to help them improve their underwater performance and combat fatigue after diving.

If you think you can take on new challenges, you will need a computer that can handle multiple gas mixtures.

For most recreational divers, two gases with a maximum of 50% O2 is sufficient. In the case of technical divers, the best is a model that can handle six to eight gases and up to 100% O2.

Operating Modes

Almost all novice dive computers include basic modes like Air, Nitrox and Gauge or Gauge.

The models for advanced divers can incorporate options such as free diving and the watch. And, high-end designs will generally add more advanced features like rebreather and Trimix.

If you like technical diving, you will need more than one computer for security. Therefore, if you are starting, we recommend buying a basic model.

Who knows, maybe later it will serve as your backup computer.

Adjustable Dive Profile

All dive computers calculate their non-decompression limits (it is the time limit that a diver can stay at a certain depth) using formulas called algorithms.

Some computers allow you to customize the diving profile using a more or less conservative mathematical model according to your level of comfort and experience.

Even the most liberal dive profile will keep you safe and dive within your limits. It can also help you stay a few extra minutes underwater.

Depth Stops or Deep Stop

If you are just starting out in the world of diving, you don’t have to worry much about deep stops. Instead, if you plan to go deeper, your dive computer may suggest additional stops during the climb.

Adding additional stops to the “safety stop” to the recommended 5 meter profile for 3 minutes gives your body more than enough time to release the nitrogen stored in your tissue.

This will help prevent disease, decompression injury, and a safer journey to the surface. Some dive computers allow you to add or remove these stops, but it will depend on whether you prefer a more or less conservative diving profile.

Easy Reset

Some computers allow memory to be restored between dives. This allows multiple divers to use a computer on the same day, regardless of previous dive profiles. In case you share your computer or to rent to students or clients, this can be an important function.

Multiple gases in a single dive

If you plan to make decompression stops while diving, chances are you need to use more than one gas mixture underwater. Adding a second gas with a higher percentage of oxygen allows your body to release excess nitrogen quickly. This faster “degassing” reduces the amount of time required for a safe ascent.

Other Functions

Alarms

Having a diving computer with alarms is very useful, especially if you are new to diving. Since, it will keep you alert and prevent you from being distracted when, for example, you have to make your security stop, among others.

The ascent rate alarm will also be useful, it will help you know when you are climbing too fast.

These can be both visual and audible alarms. It is important to read the manual of your dive computer to understand what each alarm means.

Compass

Your underwater field of view is not as good as it is on land, and as a diver, you need to know where you are going and how to get back to shore or boat. For this reason, a compass is a vital part of your diving gear.

The compass is usually mounted on your computer console or can be worn on the wrist. However, in recent years, dive computers can now complement and even replace these older compasses with digital ones.

Some of the most sophisticated computers integrate Global Positioning Systems (GPS), which use satellites to identify exactly where you are and where you have been. This feature is ideal for divers searching and retrieving, fishing or hunting for treasure.

Batteries

Another important feature is user-interchangeable batteries. This is a very important feature, especially if your computer’s batteries run out on a diving trip.

It will only take a couple of minutes to change them, instead of having to send them to the service department. Thus, you save the money you will spend on maintenance costs.

It is good to note that only some of them have a watertight battery compartment, which means that if it is not sealed properly, water can enter and ruin the whole computer. Because of this, many divers still take their computer to a service center to change the battery.

Activation

The dive computer can be activated in two ways: manually by the diver or with water.

On many dive computers you must press a button before you start your dive. However, many divers forget to activate their computer and fail to capture their diving details.

To solve these problems, dive makers now have the dive computer wake up right when you enter the water. If you are one of those divers who forget to activate the computer before diving, then this function is essential. However, the dive computer with this feature is slightly more expensive.

Memory

Most dive computers allow you to review your diving history. However, the amount of data and dives they can record usually depends on the model.

Older computers would only show you the latest data. Now the average computer can provide you with information on your last 25 dives.

If you can afford to spend a little more, you’ll get a dive computer that stores a few more dives.

PC compatibility

The new dive computers allow you to download all the details of your dive to your PC. Although your computer only allows you to store some dives, by downloading them to your computer, you can store an innumerable amount of data from your dive.

But, downloading that information to your PC usually requires a separate software and cable (some dive computers come with this included).

Depending on the software, you can convert all your diving information into graphics to show you the depths during the dives, and the time spent on each depth.

In addition, more detailed information can be recorded, such as missed decompression stops and quick nods, your level of air consumption (integrated air required).

Backlight

The backlight on your computer allows you to read the screen in low visibility or at night without using your flashlight.

Maintenance of your Dive Computer

Dive computers are designed to be strong and durable, ready to withstand the high pressures of depths and other extremes.

However, they are not perfect, you should take care of it and maintain it from time to time to make sure they work properly.

Here are some tips to properly care for your dive computer:

  • Rinse it off with fresh water. Be sure to rinse your dive computer after each dive with fresh water. This will remove any salt, slime, or organic material that may be on the computer after dives.
  • Inspect the wristbands and buckles. Check the bracelets for wear, tear, or corrosion. If so, replace it as necessary.
  • Store it in a dry, cool and ventilated area. In case you’re not using it, store your dive computer away from sunlight, heat or chemicals, as they can weaken the waterproof seals.
  • Only use the batteries recommended by the manufacturer. For a longer-lasting and well-functioning battery
  • Take it to the manufacturer’s recommended technical service. You must send your computer to obtain service every one or two years by a certified service professional. They calibrate the computer, and they also check all the seals and functions.

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