Atmos Mission 2 Dive Computer A New Level of Personal Discovery with these great features- Sapphire crystal lens- 1.2″, Sunlight-visible, Hi-res Color Display- Auto-on and constant backlight on dive Hear, See, and Feel the alarms- With Vibration, Visual, and Audible alarms, you’ll never miss your safety or deco stops; you’ll always be warned of ascending too quickly; and you’ll always know when you’ve reached your customized Depth and Time limits. Meets all your diving needs- Super intuitive user interface- Scuba Air, Nitrox, and Gauge modes- Freediving mode (Multiple Ascent & descent notify)- New! Freediving Pool mode- Gauge mode (Bottom Timer)- Mark GPS coordinates & dive spot guidance Sport and Health- Multisport: Running, Swimming, Biking, Skiing- Health: Heart rate, Step counter, Calories calculation, Sleep monitoring- Built in Altimeter, Compass- Weather & Tidal (App required)