1. The watch does not work: When the battery is exhausted and the watch stops working, it should be sent to a repair shop for inspection as soon as possible to avoid leaving the dead battery in the watch for a long time and causing damage to the movement.
2. Waterproof: Waterproof watches should not be worn in warm water or in the bathroom, because the sealing rubber ring of the watch is easily aged by heat, and water molecules can easily penetrate into the case, causing damage to the movement.