My new Seamaster Pro automatic is running a few seconds fast/slow; what should I do?
Relax. Like most mechanical devices, a new watch has a break-in period that lasts for about a month or so. During this time, your watch is distributing the oil around, and is breaking in its gears. Its accuracy will vary by a few seconds during this time, but it will eventually settle down. The C.O.S.C. standard is +6/-4 seconds a day. If it’s running way over that, return your watch. There are a number of TZ Classic Articles on C.O.S.C.
