The new Puck series computer from Mares is perfect for those in need of pure ease. A full function RGBM dive computer with larger digits for easy reading and backlight on demand. The Mares Puck Dive Computer has a single button with easy access to smoothly scroll through the menu options. Also available in 2 gauge (style 414420) and 3 gauge (style 414421) consoles. Features: RGBM (Reduced Gradient Bubble Model)-algorithm Full Function Air/Nitrox Dive Computer Precautionary Program Settings Nitrox Programmable (21-50%) Ascent rate indicator Diver-replaceable batteries Fresh and salt water Powerful backlight Air/Nitrox/Bottom timer modes Nitrogen bar graph Audible alarms Temperature Display Automatic Altitude Adjustable DEPTH: 492 feet Computer user changeable Imperial/Metric Dive Log: 38 hours/50 dives View our full selection of Dive Computers