Shearwater Research is pleased and proud to introduce the all new Shearwater Petrel Dive Computer. The size of the Petrel is about 40% smaller than the Shearwater Predator. This smaller, sleeker design has been accomplished without sacrificing the size of the large 2.4" full Color, high resolution display. In fact, with the Petrel's new processing power, Shearwater has been able to make several important enhancements in the usage of the display that you will appreciate. The second big accomplishment with the Petrel is enabling the user's ability to choose any AA size battery including rechargeable. Battery choice ranges from the current SAFT Lithium LS14500 to standard alkaline AA such as Duracell. Dive time will of course vary depending on the battery. Modes OC Rec 3 gas nitrox recreational computer OC Tec Multi gas, trimix decompression computer CC INT Closed circuit fixed PPO2 Gauge Bottom timer with stop watch. Modes OC Rec 3 gas nitrox recreational computer OC Tec Multi gas, trimix decompression computer CC INT Closed circuit fixed PPO2 Gauge Bottom timer with stop watch and dive logging Features User Replaceable AA Battery Air, Nitrox, Trimix capable Quick OC bailout from CC 3 axis, tilt compensated, digital compass Decompres