I've got my m50 a couple of days ago, and while I didn't wear it for the first day I did wind it. On the second day I set the time against my stratum 1 clock and wore it since. Its been two days now and its not lost or gained a second?
True. But two days in a row is just a bit of good luck, even with a non-COSC timepiece.I don't know what watches you own but not losing a second in two days of wear is amazingly accurate for an automatic movement, especially for a movement that isn't COSC certified.