SCUBAPRO INSTRUMENT DIGITAL 330M - Depth GaugeAlthough targeted primarily to technical divers, the Digital 330M is an ideal initial data delivery system for beginning divers, and a useful backup instrument for any diver. Whatever your skill level, the Digital 330M can be counted on to provide outstanding electronic accuracy in alldiving conditions. Incorporating state-of-the-art microchip technology, a bevy of information is provided in a compact information center. 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 330m to suit all technical 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. Available as a wrist-mount instrument or in a console with a pressure gauge and compass.