.this product can only surface splash waterproof(cool water), please don't wear it to swim, drop it to the water, or soaked in water, etc.
2.when you first receive the product, charge it for 5-10 minutes at first if it cannot be turned on because it is already low on power.
3.please contact us if the product has quality problems, we will reissue for you
(welcome wholesale and single purchase: usually bubble paper packaging to prevent product damage, if more products are purchased,
we can use carton packaging as you wish)