Features: 1.Summary of main functions: Oxygen content setting, scuba diving, no decompression time, safety factor setting, 100 meters waterproof, free diving, compass, altimeter, barometer, thermometer, time, date, timer, countdown, alarm, luminous. 2.Providing tons of uses to meet every potential need during outdoor activities, such as hiking, camping, climbing, travelling and swimming. 3.High quality tempered glass screen, durable and waterproof to withstand harsh environment in outdoors. 4.With backlight, which ensures visibility in the dark scene. 5.Size: Strap width: 24MM, Mirror diameter: 38MM, Dial diameter: 50MM, Dial thickness: 1.6CM Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Dial Material: Stainless Steel/Glass Display: FSTN screen Case: Stainless Steel Strap: Rubber Waterproof: 100m Temperature: -20---60 Barometer: 300-1100hpa Function 1. Time display function, display time, minute, second, month, day, week, 12/24H, initial value is2020-1-01 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 (0:00000, (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 Maintenance 1. Storage: please place the product in a cool place, do not place in dangerous environment, extrusion, pressure, high temperature, low temperature, high humidity, easy to fall, hard hit, etc. 2. Do not remove the watch case by yourself. 3. After use: especially after use underwater or seawater, be sure to use clean water to soak and rinse. The cleaning method is: Soak in water for about three to five minutes, then shake gently. Let the water flow into the slit to clean the salt. If there are obvious stains, gently rub with your hands. Do Not Bang in the Water. Do not use a strong water column. Do not use any cleaning solvent other than water. After cleaning, put it back on your hand or put it in a cool place. includes: 1 x Watch 1 x Manual