Full-featured Nitrox capable Dive Computer perfect as a low-profile primary instrument or a back-up. The MANTA is a powerful and versatile new sports watch, ideal for divers, free divers and those that just want to look like one. The Manta is a powerful and versatile new sports watch, ideal for divers, free divers and those that just want to look like one. A unique combination of quality, function and style, the Manta is perfect on its own or as a backup to any of our other Dive Computer models. Features:Operating Modes: Air, nitrox, Gauge, Watch and Free DiveAudible and Visual Alarms with User AcknowledgmentAdjustable Safety Stop Time and DepthBacklightingOptional ACI PC Download and Settings Upload Software and USB CableDiver-Replaceable 3 Volt CR2430 Lithium Battery24 SCUBA Dive and 99 Free Dive Log FunctionAltitude Adjustable to 14,000" (4,270 meters)Operating Depth: 330" (100 meters)12/24 Hour ClockTime to FlyTemperature (on the surface and at depth)Time to De-SaturationFree Digital Online ClassComprehensive Owner"s Manual