•SCREEN PROTECTOR -- The tempered glass material screen protector can be repeatedly wiped with a glasses cloth, to ensure the clarity of the screen without affecting repeated use. (TIPS)This cases is not waterproof, it doesn't suitable for while swimming, if you forget to take it off, or using this product when a lot of sweat is produced during sports activities, may trap moisture between the product and the watch screen. You just need to wipe with a glasses cloth.