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 Oceanic Atom 20 Air Integrated No Hose Nitrox Computer 04832107 $599.95 Time Remaining: 10d 2h 59m Buy It Now for only: $599.95 |
 Suunto Zoop Computer Wrist Air Nitrox Great Scuba Dive Computer NEW Orange $219.00 Time Remaining: 1h 48m |
 Cressi Leonardo Scuba Diving Wrist Computer Does nitrox Authorized Dealer $349.95 Time Remaining: 9d 1h 6m Buy It Now for only: $349.95 |
 Mares Puck Wrist Nitrox Dive Computer $299.97 Time Remaining: 26d 4h 36m Buy It Now for only: $299.97 |
 Aladin Pro Nitrox Dive Computer 99 Metric or Imperial Mint $197.75 Time Remaining: 6d 4h 43m Buy It Now for only: $197.75 |
 Aeris XR 2 Nitrox Wrist Computer 102610 $284.95 Time Remaining: 17d 22h 19m Buy It Now for only: $284.95 |
 Suunto Vyper Air Nitrox Wrist Computer Silver 5404 $425.00 Time Remaining: 2d 19h 34m Buy It Now for only: $425.00 |
 Suunto Cobra Air Nitrox Air Integrated Computer Console 42142 $549.95 Time Remaining: 10d 2h 19m Buy It Now for only: $549.95 |
 Suunto Gekko Air Nitrox 2 Gauge Computer $225.00 Time Remaining: 1d 8h 12m Buy It Now for only: $275.00 |
 Aeris XR1 NX Dive Computer Console Air Nitrox SCUBA NEW scuba diving equipment $399.95 Time Remaining: 15d 19h 35m Buy It Now for only: $399.95 |
 EMC20H Tech Diving Nitrox Helium Computer $1,200.00 Time Remaining: 11d 22h 1m Buy It Now for only: $1,200.00 |
 Suunto Cobra Air Nitrox Air Integrated Computer w Nav 5403 $599.95 Time Remaining: 10d 5h 24m Buy It Now for only: $599.95 |
 Mares Puck Scuba Diving Dive Computer Wrist Watch Air or Nitrox $197.95 Time Remaining: 19d 22h 40m Buy It Now for only: $197.95 |
 IST Scuba Dive Computer Wrist Watch GP 3000 Air Nitrox $299.00 Time Remaining: 4h 18m Buy It Now for only: $299.00 |
 Net Ready Mares Icon HD Nitrox Dive Computer w Transmitter $1,598.99 Time Remaining: 26d 4h 10m Buy It Now for only: $1,598.99 |
 QUICK DISCONNECT OCEANIC Scuba Diving PRO PLUS 21 Computer NITROX Compass NEW $489.99 Time Remaining: 1d 21h 12m |
 AERIS A300 AI Air Nitrox Computer Console with DIGITAL Compass NIB $999.95 Time Remaining: 5d 2h 36m Buy It Now for only: $999.95 |
 AERIS A300 AI Air Nitrox Computer Console with DIGITAL Compass New $899.95 Time Remaining: 5d 20h 15m Buy It Now for only: $899.95 |
 Sherwood WR0729 InSight Nitrox Computer wrist Mount $399.95 Time Remaining: 16d 22h 14m Buy It Now for only: $399.95 |
 Hollis DG02 Nitrox Wrist Computer $269.99 Time Remaining: 27d 23h 20m Buy It Now for only: $269.99 |
 Suunto D9 Hoseless Air Nitrox Wrist Computer w Transmit 112454 $1,299.95 Time Remaining: 10d 3h 9m Buy It Now for only: $1,299.95 |
 Dive Computer UWATEC Aladin Air Z Nitrox COMPLETE $499.00 Time Remaining: 4d 23h 55m Buy It Now for only: $499.00 |
 QUICK DISCONNECT OCEANIC Scuba Diving PRO PLUS 21 Computer NITROX Compass NEW $485.55 Time Remaining: 1d 21h 12m |
 Aeris XR1 NX Scuba Dive Computer Air NitroxCompass scuba diving equipment dive $437.45 Time Remaining: 23d 19h 55m Buy It Now for only: $437.45 |
 HOLLIS SCUBA TECH DIVE COMPUTER DG02 NITROX NAVY $263.04 Time Remaining: 24d 2h 39m Buy It Now for only: $263.04 |
 AERIS Elite T3 Nitrox Dive Computer NIB w Warranty $899.00 Time Remaining: 26d 2h 2m Buy It Now for only: $899.00 |
 TUSA IQ 600 Nitrox 3 Gauge Computer Console $375.00 Time Remaining: 23d 20h Buy It Now for only: $375.00 |
 Oceanic OC1 Titanium Dive Watch Computer Trasmitter Air Nitrox Gauge FreeDive $2,099.95 Time Remaining: 14d 2h 6m Buy It Now for only: $2,099.95 |
 Mares Nemo Air Integrated Air Nitrox Dive Computer $659.99 Time Remaining: 26d 4h 10m Buy It Now for only: $659.99 |
 Oceanic VT3 Wireless Nitrox Computer $569.00 Time Remaining: 1d 22h 20m Buy It Now for only: $720.00 |
 Genesis React Pro Nitrox Dive Computer Ships APO Canada $299.00 Time Remaining: 25d 18h 32m Buy It Now for only: $299.00 |
 Aeris XR 2 Nitrox Wrist Computer 10 2610 $335.00 Time Remaining: 5d 8m Buy It Now for only: $335.00 |
 Oceanic ATOM 30 Dive Computer Scuba Watch Nitrox with transmitter $849.00 Time Remaining: 27d 23h 33m Buy It Now for only: $849.00 |
 Oceanic Pro Plus 21 Air Nitrox Air Integrated Computer with Compass 04106107 $599.95 Time Remaining: 24d 22h 19m Buy It Now for only: $599.95 |
 Brand New Aeris Manta Wrist Air and Nitrox Scuba Diving Computer YELLOW $399.95 Time Remaining: 29d 22h 10m Buy It Now for only: $399.95 |
 Suunto Cobra 3 Air Nitrox Air Integrated Computer Console Electronic 3D Compass $962.73 Time Remaining: 1d 13m Buy It Now for only: $962.73 |
 SCUBA DIVE COMPUTER SUUNTO D4 BLACK WRISTBAND FREEDIVING NITROX MODE NEW IN BOX $399.99 Time Remaining: 2d 1h 56m Buy It Now for only: $479.00 |
 Oceanic VEO 20 Air Nitrox Computer SWIV Triple Gauge Navcon Console Compass $499.95 Time Remaining: 23d 4h 39m Buy It Now for only: $499.95 |
 Oceanic VEO3 0 Dual Algorithm Dive Computer nitrox USA $354.00 Time Remaining: 14d 16h 19m Buy It Now for only: $354.00 |
 Suunto Zoop Air Nitrox Dive Computer Wrist Watch BRAND NEW $249.95 Time Remaining: 5d 1h 5m Buy It Now for only: $249.95 |
 OCEANIC BUD Universal Backup Dive Computer air nitrox new $299.95 Time Remaining: 20d 22h 50m Buy It Now for only: $299.95 |
 AERIS EPIC Nitrox Dive Computer Watch NEW $959.00 Time Remaining: 4d 5h 45m Buy It Now for only: $959.00 |
 OCEANIC GEO 2 wrist diving computer air nitrox blue grey brand new $449.95 Time Remaining: 20d 49m Buy It Now for only: $449.95 |
 SCUBA DIVE COMPUTER SUUNTO D6 METAL WRISTBAND COMPASS NITROX MODE NEW IN BOX $749.99 Time Remaining: 2d 2h 13m Buy It Now for only: $849.00 |
 Oceanic GEO2 0 Dual Algorithm Dive Computer nitrox USA $416.00 Time Remaining: 14d 17h 41m Buy It Now for only: $416.00 |
 Oceanic Atom 20 Air Integrated Nitrox Scuba Diving Computer $959.95 Time Remaining: 12d 10h Buy It Now for only: $959.95 |
 Aeris XR1 Air or Nitrox Dive Computer Wrist Watch Gauge $269.95 Time Remaining: 7d 22h 3m Buy It Now for only: $269.95 |
 Tusa Element IQ 650 Nitrox Wrst Computer APO Canada $299.95 Time Remaining: 25d 18h 19m Buy It Now for only: $299.95 |
 Oceanic Veo 30 Nitrox Swiv Dive Computer Combo $539.95 Time Remaining: 26d 4h 10m Buy It Now for only: $539.95 |
 Genesis React Pro Nitrox Dive Computer New Wrst Mount $299.95 Time Remaining: 25d 18h 35m Buy It Now for only: $299.95 |
 Oceanic VEO 30 Air Nitrox Computer SWIV Triple Gauge Navcon Console Compass $589.95 Time Remaining: 25d 7h 24m Buy It Now for only: $589.95 |
 Suunto Zoop Air Nitrox Wrist Computer Lightly Used $160.00 Time Remaining: 2d 17h 10m |
 Oceanic VEO 10 Air Nitrox Computer SWIV Triple Gauge Navcon Console Compass $439.95 Time Remaining: 28d 4h 59m Buy It Now for only: $439.95 |
 Oceanic Veo 30 Dual Algorithm Dive Computer Air Nitrox $399.95 Time Remaining: 4d 7h 5m Buy It Now for only: $399.95 |
 Suunto Zoop Wrist Nitrox Air Dive Computer Watch Yellow Color $299.99 Time Remaining: 20d 11h 59m Buy It Now for only: $299.99 |
 Oceanic Veo 10 Nitrox Swiv Dive Computer Combo $399.95 Time Remaining: 26d 4h 10m Buy It Now for only: $399.95 |
 Oceanic VEO 30 Air Nitrox Wrist Dive Computer 04380516 $399.95 Time Remaining: 17d 6h 9m Buy It Now for only: $399.95 |
 Oceanic VEO 10 Air Nitrox Wrist Dive Computer 04300536 $299.95 Time Remaining: 27d 39m Buy It Now for only: $299.95 |
 Suunto Zoop Air Nitrox 2 Gauge Computer Console $300.00 Time Remaining: 2d 23h 9m Buy It Now for only: $450.00 |
 Cressi Leonardo Scuba Computer Air Nitrox Authorized Dealer w Warranty $349.95 Time Remaining: 7d 6h 52m Buy It Now for only: $349.95 |
 OCEANIC PRO PLUS 21 air integrated dive computer w QD Comp air nitrox new $769.95 Time Remaining: 20d 54m Buy It Now for only: $769.95 |
 Suunto Zoop Air Nitrox Wrist Dive Computer Watch Yellow Color $305.92 Time Remaining: 4d 12h 34m Buy It Now for only: $305.92 |
 Oceanic VEO 20 Air Nitrox Computer SWIV 2 Gauge Combo 04371067 $459.95 Time Remaining: 11d 6h 49m Buy It Now for only: $459.95 |
 Oceanic VEO 20 Air Nitrox Dive Computer SWIV Double Gauge Combo Metric $459.95 Time Remaining: 29d 3h 19m Buy It Now for only: $459.95 |
 Oceanic VEO 10 Air Nitrox Dive Computer SWIV Double Gauge Combo Metric $399.95 Time Remaining: 10d 20h 59m Buy It Now for only: $399.95 |
 Oceanic VEO 20 Air Nitrox Computer SWIV Triple Gauge Navcon Consol BRAND NEW $153.92 (9 Bids) Time Remaining: 3d 6h 41m |
 Oceanic Veo 30 Air Nitrox Computer SWIV 2 Gauge Combo 04381016 $539.95 Time Remaining: 8d 14h 18m Buy It Now for only: $539.95 |
 Aeris XR2 Air Nitrox Wrist Scuba Dive Computer $429.00 Time Remaining: 29d 3h 8m Buy It Now for only: $429.00 |
 Aeris XR1 Nx Air Nitrox Wrist Scuba Diving Computer $319.95 Time Remaining: 29d 3h 17m Buy It Now for only: $319.95 |
 Oceanic VEO 10 Air Nitrox Dive Computer SWIV Double Gauge Combo 04301036 $399.95 Time Remaining: 25d 5h 23m Buy It Now for only: $399.95 |
 Oceanic VEO 30 Air Nitrox Dive Computer SWIV Double Gauge Combo Metric $539.95 Time Remaining: 22h 24m Buy It Now for only: $539.95 |
 Oceanic VT3 Air Integrated Nitrox Scuba Diving Computer SET $899.95 Time Remaining: 12d 9h 55m Buy It Now for only: $899.95 |
 CressiSub Edy II Nitrox Wristwatch Computer LK $189.00 Time Remaining: 5d 23h 7m |
 Oceanic Veo 10 Air or Nitrox Scuba Dive Computer Wrist Watch $299.95 Time Remaining: 7d 43m Buy It Now for only: $299.95 |
 Scubapro Aladin One Scuba Diving Computer Capsule only New Nitrox $89.00 Time Remaining: 28d 13m Buy It Now for only: $89.00 |
 Oceanic VEO 30 Air Nitrox Wrist Dive Computer $419.95 Time Remaining: 16d 23h 20m Buy It Now for only: $419.95 |
 OCEANIC VEO 20 AIR NITROX WRIST DIVE COMPUTER $379.95 Time Remaining: 24d 4h 57m Buy It Now for only: $379.95 |
 NEW Oceanic VEO 10 2 Guage Combo Scuba Dive Personal Computer Nitrox $374.99 Time Remaining: 16d 23h 14m Buy It Now for only: $374.99 |
 Sherwood CR3509 Nitrox Dive Computer Profile Navigational Compact Console $459.95 Time Remaining: 26d 6h Buy It Now for only: $459.95 |
 VR3 Nitrox Trimix OC Computer $315.00 Time Remaining: 6d 20h 5m |
 Padi Nitrox Enriched Air Diver Specialty Book w Computer Simulator 70470 $36.89 Time Remaining: 14d 19h 9m Buy It Now for only: $36.89 |
 Sherwood Lens Protector for Profile Nitrox Insight Computer 3905 GG $11.95 Time Remaining: 10d 4h 24m Buy It Now for only: $11.95 |
 Suunto Vyper Air Nitrox 2 Gauge Computer Console 42182 $575.00 Time Remaining: 2d 20h 53m Buy It Now for only: $575.00 |
 Cressi Archimedes 2 Computer 3 Gauge Console does nitrox too New w Warranty $429.00 Time Remaining: 4h 53m Buy It Now for only: $429.00 |
 OCEANIC VEO 10 AIR NITROX WRIST DIVE COMPUTER $369.95 Time Remaining: 16d 23h Buy It Now for only: $369.95 |
 PADI Item 70906 Enriched Air Nitrox DVD for Computer $26.55 Time Remaining: 21d 22h 43m Buy It Now for only: $26.55 |
 Delta P VR 3 technical diving computer for scuba Color Nitrox OC download $365.00 Time Remaining: 7d 18h 51m Buy It Now for only: $425.00 |
 Oceanic VEO 30 Air Nitrox Dive Computer SWIV Double Gauge Combo $479.95 Time Remaining: 16d 23h 17m Buy It Now for only: $479.95 |
 Oceanic VEO 20 Air Nitrox Dive Computer SWIV Double Gauge Combo $449.95 Time Remaining: 16d 23h 11m Buy It Now for only: $449.95 |
 PADI NITROX ENRICHED AIR CREW PAK W Dive Computer SIMULATOR DVD 70480 EANX $58.89 Time Remaining: 11d 19h 49m Buy It Now for only: $58.89 |
 Genesis React Pro Nitrox Nav Computer Console New Auth Dealer 560 list $379.95 Time Remaining: 25d 18h 13m Buy It Now for only: $379.95 |
 New Aeris ATMOS Ai Air Nitrox QD Computer Compass $550.00 Time Remaining: 1h 42m Buy It Now for only: $550.00 |
 Cressi Archimedes 2 Wrist Computer does nitrox too New with Warranty $395.00 Time Remaining: 4h 42m Buy It Now for only: $395.00 |
 DIVE COMPUTER MARES PUCK AIR AND NITROX GAUGE INTEGRATED SCUBA CONSOLE BOX NEW $349.95 Time Remaining: 5d 1h 47m Buy It Now for only: $449.95 |
 Sherwood Insight 2 Gauge Compact Metric Nitrox Diving Computer Nitrox Metric D $346.15 Time Remaining: 5d 21h 4m Buy It Now for only: $346.15 |
 Genesis Nitrox React Pro Scuba Dive Diving Computer NEW $349.98 Time Remaining: 22d 2h 10m Buy It Now for only: $349.98 |
 Aeris XR2 Computer Console Air Nitrox Dive Computer 2 Gauge Console $529.95 Time Remaining: 5d 20h Buy It Now for only: $529.95 |
 Sherwood Wisdom 2 Nitrox Computer With Compass And Quick Disconnect Hose Super $528.10 Time Remaining: 5d 20h 26m Buy It Now for only: $528.10 |
 Cressi Sub Archimede 2 Air Nitrox Wrist Dive Computer $399.60 Time Remaining: 1d 2h 5m Buy It Now for only: $399.60 |
 Aeris XR 1 Nx Computer Console Air Nitrox Dive Computer Scuba Diving Compute $389.95 Time Remaining: 5d 20h Buy It Now for only: $389.95 |
Nitrox Computer
Know How Your Dive Computer Works Inside Out
Before you make a decision about buying certain dive computer, let's answer some common questions about it. In this article you will find basic and general information about these devices and this will help you on the way of choosing the "right one".
Basically, dive computer is a device that monitors and shows you depth, Elapsed Dive Time, temperature, No-Decompression Dive Time Remaining, nitrogen and oxygen loading, and many other things, depending on the model you use, dive mode, and whether you are diving or on surface.
But the main task of the dive computer – is to calculate the nitrogen loading and oxygen toxicity levels and compute the most optimal and the safest surfacing procedure, manage decompression, and the surface interval between the dives. In shorter words – it helps us staying out from getting into the Decompression Sickness as long as we obey safety rules, warnings and alarms.
It simplifies our diving by replacing Dive Planners and Wheels (but it is still a good idea to keep RDP or Wheel as a backup)!
I can mention that all dive computers produced in following mounting options:
- computer consoles (Aeris Atmos ai, Mares Puck Air, Suunto Cobra);
- wrist dive computers (Oceanic OC1, Cressi Archimede 2, Tusa IQ-950 Zen Air);
- wrist units (Mares Icon HD, Uwatec Galileo Sol, Tusa IQ-850 Sapience);
- scuba masks (Aeris CompuMask, Oceanic DataMask)
When you dive and go deeper - your safe dive time is decreasing. And if you exceeded No-Decompression Limits (NDLs) – dive computer activates Decompression mode. At that moment you will see the nearest decompression stop depth and decompression time are displayed.
Dive computer constantly monitors our nitrogen loading and oxygen toxicity level and it may give us a warning or alarm if levels come close to certain maximum allowed.
And, as well, if our ascent rate is faster than it should be – dive computer will activate Ascent Rate alarm in order for us to slow the ascent.
When we are on surface, in order to make another dive, we have to calculate the nitrogen loading level of our organisms by using Recreational Dive Planner, but if we have a computer - we just need to follow its recommendations. It will help us to perform this task by counting Desaturation Time and No-Fly Time as well.
Many modern scuba dive computers have possibility of downloading your diving history into the computer, using USB or infrared interface and special software. And you may even download from your PC into the dive computer coloured or grey-scale bitmap pictures (Mares Icon HD, Uwatec Galileo Sol and Galileo Luna)!
Depending on the model of the dive computer, you may have following dive modes:
- Air;
- Nitrox:
- Gauge;
- FREEdive
Some of the scuba dive computers may be programmed for up to 3 gas mixes and with possibility of switching between them during a single dive, and dive computer HelO2 by Suunto, may be programmed for up to 8 gas mixes, and can be used for diving with Air, Nitrox, and Trimix.
Next feature is the air-integration. You will meet three options here:
- hose air-integrated dive computer;
- hoseless air-integrated dive computer;
- dive computer without air integration
With hoseless (wireless) air integration you need to have a transmitter installed on the regulator. Many of hoseless air-integrated models have Buddy Pressure Check feature, which means that you may check air pressure of your 'buddy' using your own dive computer if your buddy's transmitter is correctly paired with your computer.
Another important feature is compensation for Altitude diving. Many dive computers these days automatically compensate for altitude diving and give you adjusted no-decompression times and depths, according to your current altitude. In some models you may set up manually altitude in certain ranges, like in Suunto and Mares brands.
It is worth to mention here Personal Conservative Factor adjustment. Just as an example – if Aeris dive computers allow us to set this factor just to ON/OFF state, Mares and Suunto models give us possibility to increase or decrease level of conservatism by choosing between highest and lowest levels. And this gives us possibility to set our computer for either liberal or conservative diving.
These days majority of dive computers are made with the diver replaceable battery option, and some of them have 'hot swap' feature, which means that you need to replace battery within 8 seconds in order to keep nitrogen and oxygen calculations for next dives and other data stored in dive computer, like some settings, for example.
When you will be doing research to get the dive computer that is the best for you – go for one, which has ‘diver replaceable battery' option. It will save you time and money, and also you will be able to continue your diving adventure without any interruptions.
Some of the models, like Oceanic OC1, Tusa IQ-900, Tusa IQ-950, UWATEC Galileo Luna, UWATEC Galileo SOL and few others have Data Retention function, which means that we may replace the battery at any time between the dives, without losing any nitrogen or oxygen calculations, because all data is stored indefinitely.
So, as a conclusion, all of those features, significant or not very, as you may think of them, have only one the most important benefit for us – keep us on the safe side and avoid Decompression Sickness (DCS).
About the Author
Jay is enthusiastic diver who is passionate about marine life, saving corals and underwater biosystems. He has deep knowledge in dive computers and he shares his learning with you on Dive Computer Wizard, where you may read complete article Know How Your Dive Computer Works Inside Out and other detailed dive computer reviews and fully researched information of dive instruments from the world's best-known brands.
I need a useful, cheap used dive computer (o2/EAN) to use while I finish my certs. Which are my best bets?
I'm not hurting for money so much as I want to wait until I know more about the diving I will be doing before I put down a thousand dollars or more on a dive computer. I just need a reliable machine that will help me log my dives and keep me informed underwater while I finish up my dive master and instructor certifications. I'm certified EAN so I'd like a computer that handles air and Nitrox. I'm looking for the best bang for my buck in a cheap, easy to use second hand model. Thanks to all who reply!!
If you are going for your dive master cert then you should know this already. But I will say it again and first off the bat. Have all used equipment checked and serviced by a qualified dealer.
Do keep in mind that a computer can be, is considered life support. If your computer goes blank, you can still breathe. But you no longer know how much air you have left, your depth, etc., unless you have a back up on your tank.
I would suggest that you visit Scubadiving do com and check out their gear reviews. Even join the forum, plenty of great people there. Both of these resources will help you to determine what you want. Once you decide, then check with the local dive shops in your area (they usually have reliable used gear). Next, take a look at Leisurepro dot com and eBay.
Leisurepro backs up what they sell, so you are less likely to get junk.
eBay is a buyer beware type of thing. I have gotten plenty of good gear from eBay. And I have gotten burned too. If you use eBay, then do a little checking, email the seller and find out if they are willing to refund if the item is not serviceable, things like that.
Good luck.
Dive Watch Computer Review. The Top 5.
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