Uwatec Digital Depth Gauge 330m Wrist Mount, Metric Data includes actual and maximum depth, ascent speed, dive time in minutes and temperature. Auto on/off feature means its always ready to dive after a quick self-test. Variable ascent rates are displayed in a percentage and with a fast ascent warning. Depth-rated to 1082ft/330m to suit all technical and deep-diving scenarios.Surface interval is displayed for 24 hours for safety and convenience. Logbook provides data for the last 20 dives to allow for post-dive review and analysis.Provides automatic altitude compensation when changing dive locations.