Seiko SNKL47
-56 seconds a week. https://play.google.com/store/apps/details?id=com.watchaccuracymeter.app
Seiko SNKL47
-56 seconds a week. https://play.google.com/store/apps/details?id=com.watchaccuracymeter.app
0s/d when it's fully wound and worn daily. If I don't wear it it ends up about -7s/d when it only has a few hours left in the spring