ERP
Guest
Get the Suunto Cobra with Air integrated instead - it can measure rate of breathing, give you the number of minutes left on your tank, and adds calculations about nitrogen build-up based on work load (via rate of breathing).
I do not believe that this is true.
If it were then given my rather poor SCR my Viper and my Cobra would disagree about NDL's since the Viper cannot measure breathing rate and I've never seen even 60 seconds disparity.
My 2c on air integration.
When I bought the Cobra I really believed their was a great deal of added value to air integration, having dove both the Cobra and Viper on a number of dives, I now find that during the dive my Cobra is little more than an expensive hard to read pressure guage.
The only thing I would really miss going to a simple pressure gauge is it's ability to log Delta PSI for the dive, since I use it to calculate my SCR in my log book.