i purchased a nike watch about a year ago, and recently it just stopped working. i have torn my house apart but i cant find the store receipt. i have the original box and warranty though. i called one of the hotline numbers, and a lady gave me an address to mail the watch to, but she said they may or may not fix it. my question is, should i mail it in, or would it just be a waste of time? does any one have a similar experience?