This is the Cressi Sub Leonardo Scuba Wrist Computer Nitrox Compatible Features: Air, Nitrox and Gauge modes FO2 adjustable between 21% and 50% PO2 adjustable between 1.2 bar and 1.6 bar CNS oxygen toxicity graphic indicator Single button interface (short push changes function, longer push selects functions) Three levels of user-adjustable conservatism User-selectable Deep Stop function Modified Haldne and Wienke algorithm Tissues: 9 with saturation hemi-phases between 2.5 and 480 minutes Ascent rate alarm (10 m per minute) Log book for 60 dives/75 hours of information with 20-second sampling rate Battery life indicator Distinct, easy-to-hear audible alarms User changeable battery Adjustable unit of measure: English or Metric Backlit display Built-in calendar and clock The instrument may be fully reset, in case of renting An elegant expression of simple, functional design, the Leonardo is a must-have for divers entering the sport and those who just want to dive." A single button interface makes it effortless to program Air, Nitrox and Gauge modes the first time a diver picks the computer up, and an edge-to-edge, high-definition screen gives large numerical displays in a computer that is still compact and travel-friendly. The clearly visible battery life indicator and distinct audible alarms deliver critical information as well as peace-of-mind during the dive. The Leonardo can also be fully re-set after each use, making it an excellent choice for rental departments. "
