This is the Sherwood Insight NITROX Computer. Whether you&';re 60 feet down or 260 feet down, you want exceptional reliability. But you also want a computer that&';s easy to read, that makes sense. The Insight gives you both. Features of this awesome computer include: Sherwood Quality Intuitive display popularized by Wisdom model Air/Nitrox or Gauge operating mode Expanded memory for dive profiles - access to up to 110 dives Deep stop reminder - conforms to latest theories recommending deep stops for dives that exceed 80 feet Digital and bar graph indicators for nitrogen or oxygen limits Audible and visual alarms - diver selectable Consumer replaceable battery PC downloadable profiles 0-5000 psi pressure gauge. Exceptionally intuitive display Three screens in Dive Mode - User Selected Imperial or metric - User Selected Dive log sample rate - User Selected Pre-dive planning: Depth - User Selected Time of Day (dive & surface) 24 HR. or AM/PM time modes Month and day display Large 270Adeg nitrogen absorption graph Maximum depth - 330 FT. Deco stops to 60 ft. Safety stop countdown timer Water or manual activation Visual warnings and alarms Automatic altitude adjustment - to 14,000 ft. Detailed Log: up to 50 dives Long-life, consumer replaceable battery HydroGlow illumination (dive & surface) Replaceable lens protector PC downloadable Surface mode: Date/Time of Day and Surface interval Mode: Air/Nitrox or Gauge Bar graph indicating nitrogen status Log Mode: Screen 1 indicator Water temperature - last dive Mode: Air/Nitrox or Gauge Previous surface interval time Deepest depth and dive time - last dive Bar graphs - nitrogen load end of dive and maximum & maximum ascent rate last dive Nitrox Mode: 21% to 50% FO2. Nitrox indicator icon 50% FO2 default - User selected O2 Sat display (dive & surface) FO2 display (dive & surface) This beauty gives you full-function capabilities and is the answer to safer more enjoyable diving for new divers and pros alike.