Oceanic VEO 1.0 Air/Nitrox Dive Computer SWIV Double Gauge Combo "Metric" ~Includes now FREE the Digital online class to get the most out of your dive computer. Powered by Oceanic's Exclusive Dual Algorithm Air or Single Nitrox Mix to 50% O2 Safety Stop Countdown Time Water and/or manual activation Single button access to "Last Dive" display (max depth &amp; bottom time)