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Oceanic Datamask HUD: Give Your Hands Absolute Freedom Underwater!

Oceanic Datamask HUD: Give Your Hands Absolute Freedom Underwater!

Oceanic DataMask is wireless air-integrated unit with inbuilt computer and optical system that gives your hands total freedom. It is ideal and may be recommended dive computer for underwater photo-enthusiasts and guys who love high-tech gadgets. This model has 4 dive modes and wireless air integration.

General Information
User Interface
Your Review



Oceanic Datamask HUD was introduced to the diving community few years ago. This scuba diving equipment consists of dive mask and computer embedded in it. By means of sophisticated optical system you may easily observe all dive data right in front of your eyes!


Oceanic DataMask HUD introduction and reviews. Unable to watch this video? Watch it on Youtube


I knew one merry chap who had DataMask HUD dive computer and according to his words – he would never go back to consoles or wrist dive computers again. He was so much in love with his DataMask that he couldn’t ever listen to other guys talking about their multigas wrist dive computers with multiple transmitters even for a mug of beer!

He was doing underwater photography and as you may imagine his routine, he badly needed his hands to be free. And Oceanic DataMask did it all for him! While his hands were busy with cameras and strobes, his eyes were busy enjoying the underwater views and at the same time watching all necessary information about his diving conditions! Isn’t it nice! Only sometimes, if he wanted to see alternative information (alternative display) during diving, he could engage his hand to press just one button, all other time – total freedom!


Oceanic DataMask HUD Features Card

Copy this Oceanic DataMask HUD Features & Alarms Card for you Reference & Share with your friends and buddies!


  • you will appreciate extra-level of freedom that Oceanic CompuMask gives your hands;
  • you will have dive computer that covers variety of diving scenarios whether diving with Air or freediving;
  • you will get instrument with comprehensive number of features including wireless air integration;
  • you will be able to replace battery yourself








User Interface
2 buttons
Dive Modes
Air, Nitrox, Gauge, FREEdive
modified Haldanean
Number of Gas Mixes
Air, 21% - 50%
1.2 - 1.6 ATA
Air Integration
Safety Stop (SS)
Deep Stop (DS)
Conservative Factor
Altitude adjustment
Gas Switching
Dive Planner
9 - 57 meters
Logbook Capacity
24 most recent dives
Max Operational Depth
100 meters
Backlight duration
5/25/50/75/100 (in %)
Sampling Rate
2/15/30/60 sec
User Replaceable Battery
Data Retention or battery 'hot swap'
PC Interface
2 years










Dive computer has 2 buttons for setting and retrieving information. They are quite sensitive so you won’t disturb and interrupt your view when pressing them.

During dive you will be presented with 2 bar graphs. Display shares one graph for both to show you either TLBG (nitrogen loading) - icon TL and thin line - ‘left border’, or O2BG (oxygen accumulation) – icon O2 with ‘right border’ line.

Oceanic DataMask doesn't have special bar graph to represent your ascent speed, so it gives you only message 'SLO" and audio if the ascent rate is more than allowable at the certain depths.







Before diving, let's set Oceanic DataMask HUD for desirable dive mode and all related parameters to it. All settings divided into certain groups, like Utilities, Alarms, FO2, time. Below you may see a summary of what we may adjust:

  • FO2 – Air, 21% – 50%;
  • Depth alarm (from 10 to 100 meters in 1 meter increments);
  • Elapsed dive time (EDT) alarm – 10 – 180 minutes range in 5 minutes increments;
  • TLBG alarm;
  • Dive time remaining (DTR) alarm – 0 – 20 minutes range in 1 minute increments;
  • Turn Pressure alarm (from 1000 to 3000 psi in 250 psi increments);
  • End Pressure alarm (from 300 to 1500 psi in 100 psi increments);
  • PO2 alarm (from 1.2 to 1.6 ATA in 0.1 ATA increments);
  • Safety Stop depth and time;
  • Personal Conservative Factor – ON/OFF;
  • transmitter link code;
  • units of measurement;
  • backlight level;
  • time and date format, etc.







Oceanic DataMask HUD: Diving With Air & Nitrox

During diving you will have a choice between main (default) display with all relevant information to certain mode and alternative displays. Alternative displays easily accessible by pressing ‘top’ button.


Oceanic DataMask HUD NO-DECO Card

Copy this Oceanic DataMask HUD NO-DECO Displays Card for you Reference & Share with your friends and buddies!


If Safety Stop (SS) was enabled – you will get audio alarm to stop after reaching upon certain conditions during dive. Safety Stop has as well main and alternative displays with all information related to those conditions and the most important in that case are:

  • Safety Stop depth;
  • Safety Stop countdown timer;
  • applicable icons


All other values that displayed in Safety Stop mode are similar to No-Decompression displays when diving with Air or Nitrox.

Oceanic DataMask constantly monitors ascent rate and if you ascend faster than alowable maximum at certain depth - dive computer will sound an alarm with message 'SLO' - it is all perfectly visible and annoyingly loud!


If you have transmitter installed and paired - all data related to tank pressure and Air Time Remaining (ATR) will be monitored and displayed.

If you get to situation when ATR will be 5 minutes left - computer will sound audio to warn you. But it calculates ATR with reserve, which means that even in case you need to perform Safety Stop or Decompression Stop - you still have enough air in your tank to reach surface, and amount of that air will be as you adjusted End Pressure Alarm set point.


PO2 and O2 are under constant monitoring as well, and if certain conditions exist - dive computer will give you appropriate alarms with all information displayed.


If we exceed our No-Decompression Limits (NDLs) - Oceanic DataMask will activate Decompression mode. After this we must ascend to displayed depth (first deepest deco stop) or a bit below and decompress for the displayed time.

At this moment main and alternative displays will show relative dive data to the Decompression mode, and below is a summary:

  • Deco Stop depth;
  • Deco Stop time;
  • Up/Down arrows and Stop bar;
  • Total Ascent Time (TAT) - time to surface;
  • TLBG and O2BG;
  • current and maximum depths;
  • Air Time Remaining (ATR);
  • Elapsed Dive Time (EDT);
  • Tank pressure;
  • PO2 and FO2 values;
  • temperature and time


During Decompression process you may create, so called, violations, like Conditional or Delayed. This happens if you ascended to shallower depth than displayed, stayed there for some time and didn't correct your position within 5 minutes.

In this case you will have penalty time that is added to required stop time.

Other violations may happen if Decompression Stop depth required is deeper than 18 meters or if you ascended deeper than operational depth of Oceanic DataMask, which is 100 meters.


Oceanic DataMask HUD: Diving In GAUGE Mode

In Gauge mode dive computer operates as a depth gauge and timer only, it doesn’t perform calculations for either nitrogen and oxygen.

During diving following information will be displayed on the main and alternative screens:

  • current and maximum depths;
  • Air Time Remaining (ATR);
  • Elapsed Dive Time (EDT);
  • tank pressure;
  • time;
  • temperature;
  • applicable icons


Oceanic DataMask HUD: FREEdiving

During freedive Oceanic Datamask calculates nitrogen loading according to fixed default FO2 of Air. When you set FO2 for diving in Nitrox – this value doesn’t make any effect on FO2 for freedives.

Before freediving, first you need to set certain parameters for this kind, while on surface. Those parameters are:

  • elapsed dive time alarm (EDT) – ON/OFF;
  • freedive depth alarms (FDA) – you may set 3 different depth alarms for progressively deeper depths (Alarm 1 at the range 10-100 m; Alarm 2 at the range 11-100 m; Alarm 3 at the range 12-100 m);
  • Countdown Timer (CDT) set points


During ‘Freedive’ mode you will have following information displayed on main and alternative screens:

  • TLBG (if any nitrogen remains from previous dives during last 24 hours);
  • current depth;
  • Elapsed dive time (EDT);
  • Dive time remaining (DTR);
  • time;
  • temperature


You may easily access countdown timer (CDT) display by depressing top button. If CDT was set to ON and time decreases to 0:00 (min: sec) – dive computer would give audio alarm and special graphic to notify you about conditions reached.

During a dive you may certainly have Freedive Depth alarms (FDA) when you reach depth values that you adjusted at initial set up.

Elapsed dive time (EDT) alarm is factory preset. If you set it ON – Oceanic DataMask will give you audible alarms with ‘Time’ message displayed every 30 seconds underwater.


If you have any level of nitrogen from previous dives from the last 24 hours – TLBG is displayed. And moreover – when nitrogen loading level increases and you enter into the so called ‘Caution level’ (4 segments on TLBG) – audio alarm comes up and ‘UP Arrow’ starts flashing on the main screen – it is time to ascend!

If nitrogen level reaches Decompression level (5 segments on TLBG) – audio alarm comes up again with TLBG and ‘UP Arrow’ flash and also graphic ‘VIO’ (violation) will flash in the place of No-Decompression (NDC) time. ‘VIO’ graphic will stop flashing when you are on surface only.

This condition is a Permanent violation and Oceanic DataMask blocks access to Air, Nitrox, or Gauge modes until you stay on surface for 24 hours without any type of diving.

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On the surface you will have an access following modes of Oceanic DataMask HUD:

  1. Plan Mode – in this mode you may plan and view No-Decompression Limits – depths and times, according to the current residual nitrogen and oxygen accumulation from your previous dives, and whether Personal Conservative Factor was set to ON or OFF – range of dive planner is 9 – 57 meters;
  2. No-Fly Mode – displays countdown timer;
  3. SAT Mode – displays time to Desaturate counter;
  4. Log Mode – displays data about 24 recent dives and contains 3 pages of dive data for each dive;
  5. History Mode – displays total number of dives, total number of dive hours, and maximum depth achieved;
  6. PC interconnect and download your Logbook and History to a PC


It is worth to mention that freedives are not recorded into either Logbook or History. They stored into the internal memory and you may download freedive data to your PC.







Oceanic DataMask HUD: What Divers Say


  • it frees your hands;
  • never leaks and never fogs with appropriate care;
  • great wireless air-integration - never missed the signal;
  • display is clear and easy to read;
  • plenty of functions for safer diving



  • may have difficulties with dive data downloading to PC;
  • visual alignment is not good and dive data is not fully visible on display;
  • display is difficult to read in bright sunlight;
  • quite a high price of this dive computer


It’s time to make our conclusion - we have known all Pros and Cons by this time - some of them are quite contradictory!

Oceanic Datamask HUD is definitely a great model especially for those people who need their hands free, like underwater photographers or archaeologists for instance, and it's recommended dive computer for them!

It is a fully functional hoseless air-integrated dive computer that certainly covers wide variety of diving activities. It is quite pricy and has few imperfections, though, (actually each dive computer has something that is not very satisfactory made), but it frees your hands!


Oceanic Datamask HUD dive computerOceanic DataMask
Dive-Computer-Wizard Rating
golden star golden star golden star golden star silver star


Are you ready to pay the price for such a freedom?
If you have enough money to spend and you want to enjoy more flexibility and freedom in diving, and you are a kind of electronic gadgets geek - the choice is obvious - Oceanic DataMask HUD is the right thing for you!



Add comment
Kian, 19 April 2013 16:15
Dive Computer Integrated Into The Scuba Mask - Very Convenient Option

I'm using this dive computer since that time when it first came on our market. We got used to one another, but from the very beginning it was a bit bulky to wear. Before it I had lightweight dive masks and extra weight was noticable right away! Now is all fine.

Even I'm not involved into underwater photography, Oceanic Datamask gives me not only complete freedom, but also I have all dive data in front of my eyes every moment - there is no need to look at the wrist dive watch computer, or pull up the hose to check out tank air pressure!

Colin, 11 September 2012 04:33
Oceanic Datamask Deserves "A +" Mark, But...!

I logged on my Datamask HUD more than 200 dives already. What to say - perfect dive computer for underwater photographer.

Easy to operate after I learnt how to handle it. I lost wireless few times, but it wasn't an issue, because Datamask picked it up in just 2-3 seconds. Control buttons are easy to press.


Display is very intuitive and all digits and messages are sharp and clear. It took me quite a while to get used to some abbreviations though! Few of them looked really ugly at the beginning - but after some time it wasn't a big issue for me anymore.

With transmitter installed and paired I get tank pressure and Air Time remaining that what I like to be aware of.


I may give this dive computer the highest mark possible, but it has couple of disadvantages as I think of them! First - it is not bright display in sunny conditions even in 100% backlight. To see what's happening or do some adjustment, I need to hide in shade. Second - PC data cable connector. Most of the times while downloading my profiles to PC, I need to hold steady this cable at the connection port of Datamask. I think that for such a high price device, Oceanic may figure out better design for interfacing Datamask with PC.


Everything else works like a dream!

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