This North Edge Aqua - professional scuba diving watch is perfect for those who love to explore the depths of the ocean. With its 100-meter waterproof capabilities, you can dive without worrying about the watch getting damaged. The stainless steel case material ensures durability and sturdiness. The watch comes with a variety of features including a thermometer, temperature, back-light, altimeter, air pressure sensor, ambient light sensor, safety factor, nitrox, barometer, and compass. The silicone band is comfortable to wear and the black color adds to its overall aesthetics. The watch also comes with a 1 year manufacturer warranty. Get ready to explore the depths of the ocean with this amazing scuba diving watch! Function: 1. Time display function, display time, minute, second, month, day, week, 12/24H, initial value is?2020-1-01 12:00 00 WED ) 2. Alarm function 3. Countdown function, the initial value of (0:00.00,12:00(0FF) 4. Stopwatch function, the initial value is (0:00?000, (0FF) 5. Step counting, exercise time, pace, mileage, calories consumption 6. Altitude, relative altitude 7. Air pressure curve, air pressure, air pressure curve view (24H) 8. Exercise time record, movement relative height view. 9. Scuba diving Mode, NDL time, depth,Temperature,diving speed. 10.Free diving Mode 11. Diving log (99 records) 12. Compass calibration function 13. Low-power reminder 14. Backlight function 15. 4 key functions 16. Use the Battery CR2450 Feature: 1. Waterproof 100M 2. Scuba Dive 3. NDL Time 4. Safety Factor 5. Nitrox 6. Free Dive 7. Compass 8. Altimeter 9. Barometer 10. Thermometer 11. World-time 12. Date Time 13. Stopwatch 14. Countdown 15. Alarm 16. Back Light Package Include: 1x box and warranty card 1x NORTH EDGE AQUA Watch 1x User's Manual