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!


Oceanic OC1- Feel Yourself Like James Bond On A Mission!

Oceanic OC1- Feel Yourself Like James Bond On A Mission!

Oceanic OC1 is a leader of Oceanic dive computers. Packed with all ever imaginable functions this is high-tech device, and it fully suits advanced recreational divers, or can be recommended dive computer for technical guys, who seek new challenges and want to have device that is very flexible to stretch diving experiences beyond the limits!

General Information
User Interface
Your Review



We may say that Oceanic OC1 is one of the leaders in high-tech wrist dive watch computers! This dive computer offers Dual Algorithm both for Conservative and Liberal diving, 3 nitrox mixes, wireless air integration, integrated digital compass and many other outstanding features.

Algorithms are listed below:

  1. Pelagic DSAT – use it for liberal diving, and to add more conservatism you may adjust Tissue Loading Bar Graph (TLBG) alarm and set your Personal Conservative Factor;
  2. Pelagic Z+ - use it for conservative diving, and by choosing this algorithm, you will increase conservative factor by 15 – 20% - this option is a great benefit for those people who involved in frequent and challenging diving conditions, divers who are overweight, and people who dive in cold water conditions or those who are returning to diving activities after long period of staying onshore for some reason


Oceanic OC1 Features Card

Copy this Oceanic OC1 Features & Alarms Card for your Reference and Share with your friends and buddies! 


Please Note: Oceanic OC1 units shipped after November 1, 2011 no longer feature Buddy Pressure Check.



Benefits of using Oceanic OC1 dive computer

  • you will be proud of yourself to wear not only one of the most sophisticated dive computers on market these days, but also a stylish wrist watch;
  • you will plunge yourself with great confidence to any dive scenario;
  • you will have dive computer with wireless air integration, and this means one hose less on your dive gear;
  • you will be able to replace battery yourself and keep all settings safe with data retention;
  • you will be able to keep your navigation steady with Oceanic OC1 integrated compass;
  • you will get dive computer with included PC interface cable - connect it to your PC right away and upload desired settings








User Interface
4 buttons
Dive Modes
Air, Nitrox, Gauge, FREEdive
Integrated Digital Compass
Standalone Digital Watch
Dual: Pelagic DSAT & Z+
Number of Gas Mixes
Mix 1- Air, 21% - 50%; Mix 2 & 3 - Air, 21% - 100%
1.2 - 1.6 ATA
Air Integration
Buddy Pressure Check
yes (only in units shipped before November 2011)
Safety Stop (SS)
Deep Stop (DS)
Conservative Factor
Altitude adjustment
Gas Switching
Dive Planner
9 - 57 meters
Logbook Capacity
Air/Nitrox/Gauge - 24 most recent dives; FREEdive - 99 dives
Max Operational Depth
Air/Nitrox/FREEdive - 100 meters; Gauge - 200 meters
Backlight duration
0/5/10/30/60 sec
Sampling Rate
2/15/30/60 sec
User Replaceable Battery
Data Retention
PC Interface
2 years


Please Note: OC1 units shipped after November 1, 2011 no longer feature Buddy Pressure Check.










Oceanic OC1 dive computer has 4 buttons on the interactive control console. By using them and their combinations you will have access to wide variety of menus, submenus, modes, and settings. But, before, you need stady documentation thoroughly, because it is quite a lengthy one and you may be confused at the beginning.


Oceanic OC1 Titanium dive computer
Oceanic OC1 dive computer (titanium case)


Dive computer has 2 bar graphs. On the left - we have shared bar graph for representation of following information:

  • TLBG shows nitrogen tissue loading and represents your No-decompression or Decompression status;
  • O2BG – represents what is the level of oxygen accumulation during a dive or over a 24 hours time


And on the right side we have bar graph VARI that rapresents our ascent speed rate.

During set up and diving in NORM Dive Mode (Air/Nitrox), Gauge, or Free Dive modes, OC1 will be showing several displays (main and few alternatives) with all information according to the type of your dive, No-Decompression or Decompression conditions, also it will show main and alternative displays for Deep Stop and Safety Stop, all applicable alarms and violation displays (if you had any).

As this is scuba dive computer with compass - you may access COMPASS Mode any time on surface or underwater. Just spend time to calibrate it properly!







All settings divided into certain groups and we access them to customize our Oceanic OC1 scuba dive computer before diving. Alarms for freediving can be set from accessing Free Menu.


Oceanic OC1 Settings Card

Copy this Oceanic OC1 Settings Card for your Reference and Share with your friends and buddies!







Oceanic OC1: Diving With Air & Nitrox

Oceanic OC1 scuba dive computer displays Dive Time Remaining (DTR) by monitoring your current depth, oxygen accumulation, Air Time remaining, No-Decompression status. It shows you not only your DTR at certain depth in minutes, but also displays status of TLBG or O2BG by adding or taking away segments of those graphs, and calculates Air Time Remaining that is based on the current depth and your breath rate (with transmitter, of course).

When you dive with compressed air – you have 79% of nitrogen and 21% of oxygen approximately. If this is the case – your tissues absorb nitrogen and Dive Time Remaining (DTR) is shown according to nitrogen loading.


When you dive with enriched air - Nitrox – it is a different scenario. You have different percentage of nitrogen and oxygen and your body responds differently to such a gas mix. In this case you are exposed to oxygen toxicity.
When amount of time remaining before you reach O2 limits becomes less than No-Decompression (NDC) Time remaining at certain depth, calculations for that depth will be controlled by O2, and Oceanic OC 1 dive computer shows Oxygen Time remaining (OTR) as Dive Time Remaining (DTR) on the main display.

Oceanic OC1 NO-DECO Card

Copy this Oceanic OC1 NO-DECO Mode Card for your Reference and Share with your friends and buddies!


Upon reaching certain conditions you may get Deep Stop and Safety Stop prompts if those parameters were set to ON.

It goes without saying that OC1 constantly monitors our O2 exposure and PO2 level. If you reach depth where PO2 level will be less than 0.2 ATA of the PO2 Set Point - dive computer will give you warning, and if PO2 level reaches PO2 Set Point - you will get that irritating alarm, and to shut it you must ascend where the level of PO2 will be less than Set Point.

Oceanic OC1 gives as High O2 warning when oxygen toxicity reaches to 80% (240 OTU) and alarm when O2 hits 100% (300 OTU) with all vital data displayed.


If we exceed our No-Decompression Limits - dive computer will activate Decompression mode. We must safely ascend to the Decompression Stop Depth displayed and stay there or just a bit below for Decompression Time displayed.

Scuba dive computer manages Decompression stops by displaying two arrows and a Stop bar. When we see Stop bar and UP/DOWN arrows at the same time all together - we are at correct Decompression Stop depth.


Oceanic OC1 DECO Card

Copy this Oceanic OC1 DECO Mode Card for your Reference and Share with your friends and buddies!


Also you may create violations during Decompression Mode, like Conditional violation or Delayed violations. That means that you ascended shallower than required Stop Depth and stayed at that level for some time, or Decompression Stop depth must be performed within depth of 18 - 21 meters, or you descended deeper than Maximum Operational Depth of 100 meters.

In the case of Conditional Violation you won’t be given an off-gassing credit, but instead you will get penalty time and you must work it off before earning off-gassing credit.

All those violations have appropriate main and alternative displays available.


Oceanic OC1: Diving In GAUGE Mode

Another dive mode of Oceanic OC1 is Gauge. In Gauge mode OC1 doesn't calculates your No-Decompression Limits and works as a depth gauge and timer only. In this mode you may access COMPASS any time and it allows you to use all your transmitters.

Below is a summary from main and alternative displays while diving in Gauge mode:

  1. Air Time Remaining (ATR);
  2. Elapsed Dive Time (EDT);
  3. Tank pressure;
  4. transmitter (TMT) in use;
  5. current and maximum depth reached;
  6. VARI, while ascending;
  7. temperature;
  8. time;
  9. applicable icons


Oceanic OC1: FREEdiving

Before freediving you need to set some specific parameters for it and they are accessible from FREE Menu:

  • Count Down Timer (CDT);
  • Elapsed Dive Time (EDT) alarm - factory preset for 30 seconds. If set to ON - alarm sounds every 30 seconds elapsed in Freedive mode;
  • 3 Descending Depth (DD) alarms, each alarm goes for progressively deeper depth at range 10 - 100 meters.


It is worth to say that Freedive mode shares some settings with Air and Nitrox dive modes and they are listed below:

  • WET Activation;
  • units;
  • Algorithm;
  • Personal Conservative Factor;
  • Backlight duration


When Oceanic OC1 senses 1.5 meters for 5 seconds - it will activate Freedive mode, having in mind that you selected Freedive before.

Freedive display has main and alternative screens and below is a summary of what you will get:

  • No-Decompression (NDC) Time Remaining;
  • Elapsed Dive Time (EDT);
  • TLBG;
  • current depth;
  • Countdown Timer status;
  • time;
  • temperature;
  • applicable icons


In Freedive mode this Oceanic computer monitors nitrogen loading that you may have from previous dives and current freedive, and it displays Tissue Loading Bar Graph respectively. And this is a feature of other Oceanic computers, like Veo 2.0 and veo 3.0, for example. It is a great benefit for us - to stay well-informed and alert of our nitrogen absorption all the time!

During freedive you will certainly get freedive alarms that you set before with appropriate dive data displayed.

When nitrogen level hits caution zone with 4 segments filled-up on TLBG - you will get High Nitrogen warning. And if you get into the situation of High Nitrogen alarm during freedive - VIOL graphic and full TLBG are displayed and your No-Decompression Time (NDC) will be displayed as 0 (zero). It happens if you nitrogen level from previous dives reaches Decompression condition.

When you resurface - Oceanic OC1 scuba dive computer will lock to FREE Mode for 24 hours. During this time you may access digital watch and compass functions.

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On surface you will have an access to following modes of Oceanic OC1:

  1. FLY/Desaturation countdown timers;
  2. Dive Planner - this function allows us to see No-Decompression times at corresponding depths at the range 9 - 57 meters, regarding to Algorithm selected, FO2 Gas 1 Set Point, and nitrogen loading from previous dives;
  3. PC upload/download. This function allows us to upload settings for time and date, alarms, and utilities. You may download from OC1 to PC dive profiles, set points, and other dive data;
  4. Air, Nitrox, and Gauge mode Logbook - stores 24 the most recent dives







Oceanic OC1: What Divers Say


  • excellent looks and style of this Oceanic computer;
  • display is easy to read at night and low intencity light conditions;
  • smooth operation and wireless never loses signal;
  • very advanced model that can be recommended dive computer for technical divers;
  • has all possible functions in the size of wrist watch



  • hard to operate dive computer;
  • manual is not the easiest to learn;
  • audio alarm may be not loud enough;
  • high price for the scuba dive computer;
  • PC software is outdated


Oceanic OC1 is a high-tech dive computer with variety of unique and distinctive features, which determine quite high price of this dive equipment.

We found that buttons are easy to press, display was clearly seen and it was easy to interpret all dive data displayed. All audio alarms were loud enough even with hood - so, not a single problem with those things.

Manuals are difficult at the beginning, but you need to know that it is a high-tech dive computer, and should prepare yourself to have a learning curve while studying this Oceanic computer!


Oceanic OC1 dive computerOceanic OC1
Dive-Computer-Wizard Rating
golden star golden star golden star golden star golden star


Please Note: Oceanic OC1 units shipped after November 1, 2011 no longer feature Buddy Pressure Check.


And as for our conclusion about this sophisticated piece of diving equipment - If you are a serious diver, beginner, advanced, or technical, if you are not afraid to spend time to learn all things about this marvelous dive computer, if you have substantial budget and want to have dive computer that has all features necessary for you to dive deeper and stay underwater longer, dive computer that you will be proud to wear, dive computer that will let you enjoy wide variety of activities – Oceanic OC1 is for you!



Add comment
Connor, 23 June 2013 12:46
Oceanic OC1 For Every Diving Need!

I've got my Oceanic OC1 when it just came out to the market. That time it still had "buddy pressure check" function. And I used it regularly when we were diving together with my wife. I don't have any complaints about this function. Don't know why Oceanic decided to get rid of this feature.

Before OC1 I've already been familiar with dive computers during my 20 years diving career. But this one nicely stunned me by its functions and multifunctionality! Learning it properly took my quite a time, as from the very beginning it was confusing. Dive computer interface is not too user-friendly. It has too many button combos to set up or change something. But Oceanic OC1 is a high-end instrument, so I had to dig thoroughly to master it.

Dual Algorithm and Safety factor setting allows me diving in different profiles, and 3 gas mixes gave me possibility to stay and enjoy my diving longer!

Oceanic OC1 - best dive computer ever made!

Drake, 20 May 2013 05:32
Best Dive Computer Overall

I've bought Oceanic OC1 year ago and already logged 100 dives on it - it was big celebration for both of us!

Owner's documentation was the nightmare at the beginning, it was a huge learning curve to learn all the functions and figure out how to access them! Now - it's all fine, and we are friends!

OC1 has huge number of functions as a dive computer, plus digital wrist watch, and on top of that - integrated digital compass. Compass can be designed better, I think. For me arrow is too small and all layout looks awkward - but it's not a big deal anyway!

I love high level of customizations - I can choose between dual algorithm what profile to dive - liberal or conservative, can set Deep and Safe Stops, Personal Safety factor.

Wireless works well, but still occasionally it loses the connection for 1-2 seconds.

I think Oceanic OC1 is the best dive computer ever made in wrist watch style!

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