Dive Computer Expert Reviews
Saving Your Precious Time And Finding The Best Dive Computer For You

Dive computer reviews are perfectly organized and consist of fully researched information and ratings of Aeris, Cressi, Mares, Oceanic, Sherwood, Suunto, Tusa, and UWATEC/ScubaPro brands.  In Catalogue Section you may compare any models side-by-side and select dive computer according to your needs! Join thousands of happy customers!


Suunto D6 - A Must Have Dive Computer For Those Who Are Serious About Diving

Suunto D6 - A Must Have Dive Computer For Those Who Are Serious About Diving

Suunto D6 was made as a solid design and precise workmanship, elegant and reliable wrist dive watch computer that will emphasize your personality during everyday life and great ‘buddy' underwater, with integrated digital compass, 2 Nitrox mixes, intuitive interface, and highly customizable functionality!

General Information
User Interface
Your Review



Suunto was always considered to be a brand that set exemplary standards for dive computers. And one vivid example to support this statement is D6 scuba dive computer!

Suunto D6 is an advanced instrument that allows us to set dual Nitrox gas mix and use it for recreational technical diving. It may be recommended dive computer for guys who have all necessary certifications for that kind of diving and to those beginners who are serious to take a step further in their diving career.

So, let’s discover what is so special about Suunto D6. And why it is considered to be one of the best dive computers in our market these days.

Learning briefly about main features and characteristics of D6, we may say that D6 is younger brother (or sister, whatever you like!) of Suunto D9. These two dive computers have many similar functions, except few differences, listed below:

  • D6 doesn’t have wireless air-integration function, like D9;
  • D6 can operate only with 2 Nitrox gas mixes instead of 3 gas mixes, like D9;
  • D6 doesn’t have Air Time Remaining (ATR) display and alarm;
  • D6 doesn’t have tank pressure display;
  • D6 doesn’t have tank pressure bar graph;
  • D6 doesn’t have tank pressure alarm


Last 4 functions are obviously absent in D6 because of non-existent air-integration!


Suunto D6 Features Card

Copy this Suunto D6 Features & Alarms Card for your Reference and Share with your friends and buddies!



Benefits of using Suunto D6 dive computer

  • you will get perfect instrument that is very easy to use even in very difficult situations;
  • you will have stylish, great looking, reliable and reputable diving computer;
  • you will have instrument with perfectly workable integrated digital compass;
  • you will be able to adjust Suunto D6 dive computer in many different ways;
  • you will have dive computer with perfect and easy to read display layout;
  • you will have dive computer with excellent DECO management;
  • you will have instrument that works great underwater as dive computer and onshore, as stylish digital wrist watch;
  • you will get quite a few compliments from your mates, that's for sure!








User Interface
4 buttons
Dive Modes
Air, Nitrox, Gauge
Standalone Digital Watch
Integrated Digital Compass
Suunto RGBM
Number of Gas Mixes
Air, 21% - 99%
0.5 - 1.6 bar
Air Integration
Safety Stop (SS)
Deep Stop (DS)
Conservative Factor
Altitude adjustment
A0/A1/A2 (range from 0 to 3000 meters)
Gas Switching
Dive Planner
9 - 45 meters
Logbook Capacity
36 hrs with 20 sec sampling rate
Max Operational Depth
100 meters
Backlight duration
5/10/20/30/60 sec
Sampling Rate
1/10/20/30/60 sec
User Replaceable Battery
Data Retention or battery 'hot swap'
PC Interface
2 years










Suunto D6 has 4 control buttons on the user interface panel: MODE, SELECT, UP, DOWN. Using them it is very easy to select any function and set up desirable parameters – no strange combinations, but in any case you need to spend quite some time with manuals learning how to get most of this dive computer.

D6 has only Ascent Rate Bar Graph located on the right side of display in contrast to D9 that has 2 bar graphs – Tank Pressure and Ascent Rate Bar Graphs.







Since this dive computer has digital watch functions at full extent – the first thing we will want to do is to set up our digital watch!

Suunto D6 is very easy to set - just need to play with buttons a bit and read manuals – no problems at all!

You will be able to set following values:

  • time;
  • dual time (alternative time – can be your travel destination time zone);
  • daily alarm;
  • units;
  • backlight duration - 5/10/20/30/60 seconds;
  • tone – ON/OFF;
  • Stopwatch


Next – you will, probably, move to Compass sub-mode and calibrate this thing. You may call up Compass during diving or on surface.

Now it is time to customize our Suunto D6 dive computer more. Each sub-mode of Dive Mode, whether it is Air, Nitrox, or Gauge allows you to adjust only those parameters, which are typical for particular sub-mode.

For example, you won’t be able to access settings for nitrox dive if you selected Gauge mode. But many of settings are shared between sub-modes, like Depth and Dive Time alarms, Personal and Altitude programs, Safety and Deep Stops, and some others.

Below is a list of what you may set at this stage:

  • Depth alarm – factory preset to 40 meters; user adjustable with the range from 3 – 100 meters;
  • Dive Time alarm – range 1 – 99 minutes;
  • Gas mixes – Mix 1 and Mix 2 (if dive computer set for Nitrox dive, Mix 2 may be set ON/OFF);
  • FO2 – 21% - 99%;
  • PO2 – 0.5 – 1.6 bar;
  • Personal Conservative Factor – P0/P1/P2 (to make dive computer more conservative);
  • Altitude program – A0/A1/A2;
  • Sample Rate for profiling;
  • Safety and Deep Stops (Deep Stop may be set ON/OFF);
  • RGBM attenuation (for experienced divers) - 50%/100%


If you set Deep Stop function to OFF – you will have Safety Stops displayed during a dive – Recommended and Mandatory Safety Stop. You may miss Recommended Safety Stop – no any penalties for that, but you have to complete Mandatory Safety Stop, or you will get shorter No-Decompression Time during next dive.

Mandatory Safety Stop is activated when your ascent is greater than allowed. And to prevent creation of microbubbles in greater levels – RGBM responds by giving you a Mandatory Safety Stop.

If you set Deep Stop to ON – you won’t have Recommended Safety Stop prompt, but you may still have Mandatory Safety Stop upon reaching certain conditions and Deep Stop prompts. Deep Stop is a safety stop too, but it happens in greater depth, deeper than traditional safety stops occur. And you will be able to set duration of the Deep Stop for 1 or 2 minutes.







Before diving it is recommended that you activate Dive mode in order for D6 to do some pre-checks. Actually, it’s a good practice – do pre-checks before diving!


Suunto D6: Diving With Air & Nitrox


Suunto D6 NO-DECO Card

Copy this Suunto D6 NO-DECO Card for your Reference and Share with your friends and buddies!


You can view all information by using UP/DOWN buttons to move between the screens. You can create a bookmark in you diving profile – it will be saved in dive computer memory for further viewing and downloading to PC.

During No-Decompression dive you may have either Safety Stops or Deep Stops remainder, according to the setting you have chosen before. Stop depths and times, and all applicable icons will be displayed to help you to manage those situations. As I said above, you may miss Recommended Safety Stop, but you have to complete Mandatory Safety Stop.

If you are ascending faster continuously – you will definitely increasing possibility of injury. So, to avoid unpleasant and painful moments during your diving trip – please follow good diving practices guidelines! Because hour in Decompression Chamber costs quite a high price, but your health is much dearer!

If during a dive you need to access digital compass – just press and hold SELECT button for more than 2 seconds. You can call up compass at any dive mode and on surface. Just to be sure that it’s calibrated correctly!


When you set D6 for diving with Nitrox, dive computer would give you number of available functions to adjust for this type of diving.
Suunto D6 allows you to use 2 Nitrox gas mixes each with FO2 21%-99%. Also you may set PO2 in a range of 0.5 – 1.6 bar. After you set gas mixes to ON and desirable and correct parameters for each gas mix – you are ready to dive with Nitrox!

Probably you already know that calculation of maximum operational depth (MOD) is based on FO2 and PO2 values that you entered.

During this type of dive you will be presented with data that similar to what you can get during diving with Air, and as an addition to it, D6 will display following values that are special for Nitrox dive:

  • FO2 value;
  • PO2 value;
  • OLF – oxygen limit fraction (oxygen toxicity level)


Changing gas mixes during a dive is a very easy procedure – by using UP or DOWN buttons we select desirable gas mix; after that – press button SELECT, and Suunto D6 dive computer sets the mix that you selected and will start all calculations according to the settings of this gas mix.
If PO2 limit of the selected gas mix was exceeded – D6 wouldn’t allow you to change to that gas mix. It will be shown, of course, but you couldn’t pick it up for selection.


If you exceed your No-Decompression Limits (NDLs) – Suunto computer activates Decompression mode. All data that you will get after that is related to this mode. During decompression you will be prompted to complete one or few decompression stops at a range of depths.

Suunto D6 dive computer has Continuous Decompression feature that allows us to perform decompression within the certain range of depths, so called Decompression range. It starts from the ‘floor’ (deepest depth where deco stop time won’t increase) to the ‘ceiling’ (shallowest depth) and decompression is done between them.

This Suunto computer manages decompression perfectly by displaying following data:

  • guiding arrows (for your correct ceiling depth);
  • Ascent Time in minutes (total time to surface, including time to reach the correct ceiling, time to stop at the ceiling, Mandatory Safety Stop (if any), time to surface after ceiling);
  • Ceiling depth;
  • Dive time;
  • max depth reached during a dive


If you, by some reason, ascend above the ceiling, D6 would give you an audio alarm with corresponding icons, your current depth and ceiling depth values, and Error mark. It means that you have only 3 minutes to correct you position and go deeper to ceiling depth displayed or a bit below.
If you violate the decompression – Suunto dive computer will activate Error Mode and will work as a depth gauge and timer only. You must not dive for at least 48 hours then!


Suunto D6: Diving In GAUGE Mode

When you set Suunto D6 dive computer as a Gauge, it will work as a depth gauge and timer only and won’t perform any calculations for nitrogen or oxygen absorption. You may use D6 for freediving as well in a Gauge Mode.

In Gauge Mode this Suunto dive computer will display following data:

  • current depth;
  • max depth reached during a dive;
  • Total Dive Time;
  • Dive Timer – SET/RESET


Back to Top







When Suunto D6 senses 1.2 meters depth or less – it will change Dive display to Surface display and it will show you data related to last dive, like:

  • current and maximum depth reached;
  • Elapsed Dive Time (EDT);
  • time;
  • temperature;
  • FO2 and PO2;
  • OLF;
  • No-Fly icon, etc.


On surface you may access Memory Mode. It is the third operational mode of Suunto D6 dive computer and this mode and its sub-modes are similar to Suunto D9. This mode has 3 sub-modes:

  1. MEMplan;
  2. MEMlog;
  3. MEMhis


Below you will find brief descriptions each of these sub-modes.

MEMplan allows you to see your next No-Decompression times for particular depths for your next dive, taking into consideration any residual nitrogen you may have from previous dives.
It calculates No-Deco times only for Mix 1. This function is good thing for planning repetitive dives.

MEMlog stores in memory logs, bookmarks and profiles of approximately 36 hours of dives and its capacity depends on sampling rate that you set. Sampling rate is factory preset for 20 seconds for profiling, but you may set it for 1/10/20/30/60 seconds.
Logbook is very extensive and it has 3 pages of data of your diving activity. To access each page – just press SELECT button.

MEMhis records and stores a dive history for up to 999 dives and 999 diving hours. It displays data about deepest depth reached, total dive hours and total number of dives.


One more word about Suunto Dive Manager (SDM).
It is optional (!) software that will allow you to download dive data to PC, organize it, plan subsequent dives, view and print your diving profiles. You may visit Suunto website and then check for newest version of this program.







Suunto D6: What Divers Say


  • very easy to use even in very difficult situations;
  • great digital compass;
  • worth of paying the extra money;
  • stylish, great looking, reliable and reputable diving computer;
  • may be recommended dive computer for recreational technical diving



  • no user replaceable battery option;
  • very conservative even with RGBM attenuation set to 50%;
  • manual is not the best one;
  • hard to mount display protector and no description how to do it


How to describe Suunto D6?
I think the best words is to repeat what had already been said about D6 - solid design and precise workmanship, elegant and reliable wrist dive watch computer that will emphasize your personality during everyday life and great buddy underwater, full of functions that you may imagine and even more pleasant surprises!

Many functions are the same as Suunto D9 has, except those, which have something to do with air-integration – you may see it in our comparison chart.


During test dives we were very pleased with performance of this dive computer - very easy readable display, easy to change mix, perfect Deep Stops and DECO mode management.

The biggest inconvenience - NO user replaceable battery, and to change it - you need to send D6 to Suunto authorized dealer. But this is only one complaint, and nothing else!


Suunto D6 dive computerSuunto D6
Dive-Computer-Wizard Rating
golden star golden star golden star golden star golden star


So, if you are a beginner or experienced diver and do not want or can’t afford to spend few hundred bucks more for air-integration (or maybe you just do not need air-integration at all), but love Suunto range of dive computers, and don't ming sending it every time for battery replacement – try Suunto D6. You will never go wrong with this Suunto dive computer!



Add comment
Patrick, 9 October 2013 15:19
Died After Great Surving Me Few Years

It was great dive computer that travelled with me around the world for few years with more than 700 dives logged. But one day it got frozen and nobody could recover it back to life (even in service centre). So I placed Suunto D6 on my shelf as a good memory reminder, and going for air-integrated Suunto D6i, or even for Suunto D9tx. It is time for me to try something different!

Mason, 20 June 2013 04:48
Great Suunto D6 Wrist Dive Watch Computer

I got my Suunto D6 as secondhand from my mate. I didn't mind having non air-integrated dive computer. And D6 overfulfilled all my expectations! As I used before Suunto ZOOP - I knew all ins and outs of Suunto setup process and its operations.

Now ZOOP is a handy addition to D6 - it works as a backup device. I love Suunto D6 completeness. This dive watch computer has everything recreational diver needs in one package: full-featured dive computer, integrated digital compass, and digital wrist watch. I won't trade it for anything else!

Andrew, 15 March 2011 10:21
Dive Profile Display

Unable to automatically scroll thru dive profile as is able on D4 - must continually press 'Down' button to scroll dive profile.

Add comment