Shearwater Research Petrel 3 Fischer Dive Computer Spearguns the ski power metric helps

the ski power metric helps measure the actual exercise load of cross-country workouts

It uses infrared technology to gather data from the dive computer with minimal power consumption

is an ideal travel companion

) G-Lock2 back zipper with offset tooth design and PU coated zip tape guards against water entry

Shearwater Research Petrel 3 Fischer Dive Computer Spearguns the ski power metric helpsThe PETREL 3 FISCHER gives divers our most connected experience. A stunning, easy to read, 2. 6 AMOLED display is protected by a toughened glass lens, titanium bezel, and piezo touch buttons. Air integration is standard with up to four Shearwater transmitters to customise a solution from open circuit to rebreather and bailout gas pressure monitoring. Safety is increased with a strong vibration alert system, and a user changeable AA battery offers long