Outdoor Sports S-mart Waterproof S-mart Electronic Watch Air Pressure Compass Running Multi-Function Diving Watch Features: 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 watchcase by yourself 3. After use: especially after use under water or sea water, be sure to use clean water to soak and rinse. The cleaning method is: remove the watch from the hand, gently grasp the strap and place the entire product in the water. 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 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. Internal inclusion： 1PC watch 1PC charging line