I bought a used Breitling Superocean chronograph on eBay about a month or so ago, and on the first day wearing it, it suddenly stopped. I had to reset the watch and it started back up again. I had this happen three more times over the course of a week so I ended up returning it. On Friday, I received my second eBay purchase, a used chronomat. The watch appeared to be working great, with the power reserve kicking in when not on my wrist. Until last night while I was sleeping, and this second Breitling automatic did what they are not supposed to do, it stopped. Seems to be working fine with a reset, but I'm curious, is this a known issue with Breitling? Should I be concerned about the quality of my second watch purchase?