Mares Nemo Wide Dive Computer Wrist Watch New nitrox function: three-different gas mixtures during single dive Wide, high-contrast display with a 170 degree Viewing angle, data displayed in large-size characters 4 buttons easy access simple to use, upgradeable software, hypoallergenic rubber strap, algorithm: mares-wince rgbm Deep stops and safety stop functions, back lighting, user replaceable batteries, mineral glass lens, altitude adjustable, log book function Air, nitrox and bt function modes, precautionary programmable, 492' depth Rating, power indicators, audible alarms, calendar and temperature displays