- 2/8/09
- 10,405
- 12
- 0
There is no risk opening the back (you could even grease the o-ring, improve your watch's waterproofness), this is even Dr.Verylong-proof.
If the rotor is loose, the watch won't wind properly.
I'd not be concerned about 8 seconds. COSC is 6 seconds!
If the rotor is loose, the watch won't wind properly.
I'd not be concerned about 8 seconds. COSC is 6 seconds!