What Are The Best Dive Computers to get in 2021?

When it comes to looking for the most suitable dive computer, divers are always in a quandary. With a plethora of such diving equipment in the scuba diving market of today such as diving regulators and diving bags, which really is the best diving computer to get for yourself? 

Well, fret not, because today we have compiled a list of our most popular dive computers, reviewed and trusted by both our highly experienced diving instructors as well as loyal customers.

Suunto D4i

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The Suunto D4i is a great dive computer that comes with a dedicated free dive mode and optional wireless air integration. Easy synching with Movescount lets you share your unforgettable dives and images and video with the world as soon as you're out of the water.

Suitable for: Beginners and Advanced

Gases: Air, Nitrox

User Chargeable Battery: No


  • Wireless air integrated

  • Downloadable dive logs

  • Built in dive planner

  • Freedive mode


  • Compact size that makes it appealing to double it as a wristwatch

  • Versatile freediving mode for those who scuba dive and freedive

  • Intuitive display and buttons

  • Powered by CR2450 lithium battery

  • Colour strap options

  • Comes with a comprehensive owner manual and guides

  • Comes with scratch guards

  • Covered by a 24 month limited warranty.


  • The Suunto Wireless Transmitter comes separate

  • The elastomer strap may wear overtime

Buy the Suunto D4i Dive Computer here

Garmin Descent MK2 and MK2i

Garmin Descent MK2

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Garmin Descent MK2i

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The Garmin Descent MK2 and MK2i are highly advanced, watch-style dive computers. The MK2i comes with features beyond the MK2 such as air integration pressure monitoring and Sub Wave Sonar data transmission. The MK2i comes with a titanium bezel and backplate that differentiates itself from the MK2.

Suitable for: Advanced

Gases: Air, Nitrox, Trimix

User Chargeable Battery: No


  • (MK2i Only) Air integration pressure monitoring

  • (MK2i Only) Sub Wave Sonar data transmission

  • Multi Sport Training Function

  • Comes with different sports apps such as golfing and skiing as well

  • Comes with Garmin Pay, music capabilities and user notification alerts


  • Through the Garmin Dive App, users are able to share and receive dives with other fellow scuba divers

  • You are able to select between multiple dive modes depending on your preference

  • 16 days battery life in smartwatch mode, 80 hours in dive mode and 50 days in Battery Saver Watch mode


  • Transmitters not included

Buy the Garmin Descent MK2 Dive Computer and Garmin Descent MK2i Dive Computer here

Suunto D5

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The Suunto D5 is a versatile dive computer that comes with several modern features that makes it suitable for scuba divers that are just beginning and also those who have the experience. 

Suitable for: Beginner and Advanced

Gases: Air, Nitrox

User Chargeable Battery: No


  • Digital logbook

  • Exchangeable straps

  • Updatable software

  • Digital Compass

  • 100m Water Resistant

  • Wireless Mobile Connection


  • The watch comes with a sleek finish, giving it a professional look and feel

  • Gas-switch compatibility

  • Comes with an in-built compass

  • The algorithm is adjustable between conservative and aggressive


  • Recalibration is required for the compass after recharging the battery

Buy the Suunto D5 Dive Computer here

Seac Sub Action and Seac Sub Action HR

Seac Sub Action 

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Seac Sub Action HR

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Both the Seac Sub Action and Seac Sub Action HR are wrist-style dive computers that are designed to have a look and feel of a sports watch. Both come with 3 main modes: Scuba Mode, Gauge Mode and Freediving mode. The only difference between the two is that the Seac Sub Action HR is the High Resistance (HR) version that comes with a black bezel and buttons, treated with an ultra durable structure for improved resistance to abrasion and corrosion.

Suitable for: Beginner and Advanced

Gases: Air, Nitrox, and mixes with O2 concentrations up to 99%

User Chargeable Battery: No


  • 3 Main Modes (Scuba, Gauge and Freediving)

  • Comes with a logbook memory: 

    • SCUBA mode: 40 hours with records every 5” (12.7cm)

    • FREEDIVING mode: 18 hours of activity with records every 2” (5.1cm)


  • The watch is designed to have great ergonomics for performance

  • User friendly interface

  • The availability of three different modes help cater to the varying needs of every diver

  • Comes with MOD exceeded alarm, deco stop violated alarm, ascent speed alarm, NoFly time and desaturation calculations, maximum permitted altitude warning

  • (Seac Sub Action HR Only) comes with a more durable structure with improved resistance


  • It only comes in 2 color variations (Black and Black/White)

Buy the Seac Sub Action Dive Computer or the Seac Sub Action HR Dive Computer here

This wraps up our best dive computers to get for 2021. If you have yet to find one that is suitable for you, do head over to our dive computers webpage for more options!


Tags Dive Gear