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HelO2 Computer

Suunto HelO2 is an advanced mixed-gas dive computer for divers who use multiple gases such as trimix, nitrox, and oxygen to go deeper for longer. Featuring the Suunto Technical RGBM algorithm and a multi-gas dive planner, the device is designed to make your whole technical diving experience simpler, faster, and more flexible.

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  • Deeper, longer dives with support for multiple gases such as trimix, nitrox, and oxygen
  • Simplified planning of dive profiles, gases, and back-up plans with the graphical Suunto multi-gas dive planner
  • Continuous decompression through the Suunto Technical RGBM algorithm
  • Rated to 120 m / 393 ft and with full mixed-gas capability
  • Flexible decompression
    Rated to 120 m / 393 ft and with full mixed-gas capability, Suunto HelO2 incorporates the Suunto Technical RGBM algorithm. The algorithm extends decompression flexibility into the world of technical diving by allowing continuous decompression. The algorithm introduces helium tissue groups into the decompression model to enable trimix diving, as well as diving on air and nitrox. It allows you to program eight gases as primary or secondary gases, and enables an oxygen content of 8% to 100%, and a helium content of 0% to 92%. In addition to increasing decompression flexibility, the algorithm also reduces your decompression task load by removing the need to constantly monitor a slate and watch.
  • Simplified technical dive planning
    Suunto Multi-gas Dive Planner – part of the Suunto DM4 software – is designed to simplify the planning of dive profiles, gases, and back-up plans. The easy-to-use graphical planner allows you to try variations of depth, time, gases, and partial pressures without having to continually recalculate. The planner calculates all changes instantly and presents the results on an easy-to-read graph. When ready, you can simply transfer information relating to planned gases, and other dive-critical data, from your PC or Mac to your dive computer with the included USB cable – removing the need to copy all the calculations onto a slate. The dive planner also gives you gas mixing instructions for your planned dive, which you can print out and take to a dive shop if you're not mixing yourself.
  • Accurate dive series planning
    The Suunto Multi-gas Dive Planner enables you to plan dive series based on your actual dive profiles – not planned dive profiles – making the plans for later dives in the series more accurate. The planner also allows you to compare the planned dive and the actual dive by supporting the analysis of up to eight gases. This also helps you pinpoint elements of both your planning and diving that may need some fine-tuning. When the dive is over, get detailed graphical logs and dive data on your computer using Suunto DM4 software.
Log book memory
Personal adjustment
Safety stop
Temperature display
Deep Stops
Operation mode Nitrox
Dive planner
Operation mode Gauge
Altitude adjustment
Consumed bottom time graph
Ascent rate monitor/alarm
Audible alarm
Full decompression data
Lifetime history memory
Maximum depth alarm
Operation mode Air
Suunto Technical RGBM algorithm
Dive time in seconds in gauge mode
Profile sampling rates in seconds 10, 20, 30, 60 s
Ascent time display Up to 199 min
Maximum depth display 150 m (492 ft)
Wireless air integration Optional
CNS% + OTU calculation (OLF)
Gas switching during dive
Max PO2 adjustment 0.5-1.6
O2 % setting Up to 8 gases containing 8-99%
Selectable metric/imperial units
Menu-based user interface
Adjustable backlight duration
Dot-matrix display
Operating temperature 0°C - +40°C / 32°F - +104°F
Storage temperature -20°C - +50°C / -4°F - +122°F
Backlight type Electro-luminescent display
Water resistance 150m / 492ft
Weight 68 g / 2.4 oz
Battery power indicator
Low battery warning
User replaceable battery/td>
Software name/td> Suunto DM4 and Multi-gas Dive Planner
8 gas mixes
Helium Up to 92%
Oxygen 8-99%
Calendar clock