The watch will stop from time to time, is the battery or the watch, I do not know. I wanted to return it for an exchange and there I realized that the return costs are in my care with a reimbursement of such expenses to euro 1.99, a bit light for sending a watch that is in a box and unacceptable given that the return is for a defective item. This is the first time that I have this kind of problem with Amazon, I'm really disappointed !!!