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Suunto HelO2 Dive Computer

by Suunto

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Product Description



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.

Key Features:

  • 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
  • Detailed graphical logs and dive data on your computer using Suunto DM5 software

What's in the Box?

  • Suunto HelO2, 
  • USB cable, 
  • Dive manuals on DVD
  • Quick Guide
  • Dive legal leaflet with warranty information

Measurements: 69.1  x  66.2  x  32.1  mm
Weight: 68 g
Measurements: 2.72  x  2.61 x  1.26 "
Weight: 2.4 oz
Bezel material: Composite
Lens material: Acrylic
Case material: Composite
Strap material: Elastomer




Bezel material: Composite
Lens material: Acrylic
Case material: Composite
Strap material: Elastomer
Weight 68 g
Water resistance 120 m (ISO 6425, EN 13319)
Battery life in time mode NA
Battery life 100 dives/year 1 year
Battery type CR 2450
User replaceable battery  
Time, date  
UI languages EN
Backlight electro-luminescent
Configurable backlight duration: 5, 10, 20, 30, 60 s
Display type matrix
Display resolution 49 x 22
Battery indicator low battery indicator
Metric and imperial units  



Data transfer USB cable
Connectivity (between devices) inductive
Compatible with DM5  
Compatible with Movescount with DM5


Physical Specifications

Operating temperature 0° C to +40° C / +32° F to +104° F
Storage temperature -20 ° C to +50 ° C / -4° F to +122° F


Diving Functions


Maximum operating depth (EN 13319) 120 m
Trimix (mixed gas)  
Nitrox (and air)  
Dive time 0 to 999 min
Surface time 0 to 99 h 59 min
No fly time  
Safety Stop  
Deep Stop  
Ascent time display 0 - 199 min (- - after 199)
CNS/OTU (OLF) calculation  
Wireless air integration optional
Decompression model SUUNTO TECH RGBM
Personal adjustment from -2 to 2
Altitude adjustment 0 - 300 m / 300 -1500 m / 1500 - 3000 m
Gases up to 8 gases (Oxygen 8 - 99% / Helium 0 - 92%)
Gas max pO2 1.2 - 1.6
Gas switching
No-decompression planner  
Logbook memory ~42 h (20 s sampling rate)
Logbook bookmarks
Logbook sampling rates 10, 20, 30, 60 s
Dive History lifetime


Dive Alarms and Notifications

Dive time
Maximum depth
Tank pressure
High pO2 (hyperoxic)
Low pO2 (hypoxic)
Too fast ascent
Decompression ceiling violation
Deepstop violation
CNS/OTU (OLF) 80% / 100%
Switch gas (better gas is available)

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