Suunto D6

Gas-switching Suunto D6. 
All the information you need relating to depth, time, direction, and decompression status is now available on one clear wristop display. 
In addition to having mode-specific information available to you at all times, your Suunto D6 records and stores data for later analysis. You can view, compare, and analyze your diving performance through the downloadable Suunto Dive Manager PC software. 
Deeper Understanding 
Suunto D6 has three dive modes: Air, Nitrox, and Gauge. The Air mode is used for diving with standard air, the Nitrox mode for one or two nitrox mixes, and the Gauge mode for use as a bottom timer.
When in Nitrox mode, you can accelerate decompression by switching to a gas mix with a higher oxygen percentage. You can preset two different gas mixes (with between 21 and 99% oxygen) and set PO2 values for each individual gas. While diving, its quick and easy to switch between enabled gas mixes. Gas switching is only allowed for gases that lie within the chosen maximum PO2 limits. CNS and OTU values are displayed using an Oxygen Limit Fraction (OLF) bar graph.

Product Features 
Air, Nitrox and Gauge modes 
Gas switching (2 mixes 21-99%) 
Complete decompression stop data 
Multi-step ascent rate indicator 
Integrated digital compass 
Extensive memory functions 
Adjustable Suunto RGBM model 
Audible alarms (including maximum depth alarm) 
PC-interface included
Black wrist strap