How long does a fully wound GMT II ceramic last before it stops?

[Dr.C]

Recently purchased a GMT II ceramic and was curious being this is my first automatic self-winding watch. My Speedy Moon and my Daytona 6265 are both manually winding. Google search turned out to be inconclusive. Any input is appreciated. Thanks!

[smallcandle]

How long will it run without wearing it? Somewhere between 42 and 48 hours. Have you conducted this test yourself yet?

[Dr.C]

I haven't tested it out. Haven't taken the watch off my wrist since I bought it. Figure I have to "break in" the movement like a new car engine. Am I wrong?

[gwalker]

You don't have to break it in. If you wear it every day it should stay wound. Give it about 40 turns once a week to keep the reserve topped off.

[padi56]

Originally Posted by Dr.C

Recently purchased a GMT II ceramic and was curious being this is my first automatic self-winding watch. My Speedy Moon and my Daytona 6265 are both manually winding. Google search turned out to be inconclusive. Any input is appreciated. Thanks!

On a full manual wind 40 full crown turns clockwise all the mens Oyster watches should run 42 -48 hours off wrist.Watches like the Daytona, YM11, after a full manual wind 60 full crown turns around 70-72 hours off wrist.