Oceanic Veo 250 Air/Nitrox Dive Computer Console Combo Air, Nitrox and Gauge Modes | Advanced user settings and options Your choice of up to 4 dive mode displays may be changed at any time during the dive PC Downloadable with optional OceanLog PC Interface Audible alarm with flashing LED warning light and Alarm Acknowledgement Simulator and advanced dive planner | SmartGlo Backlighting