HANDS-ON REVIEW: Casio G-SHOCK Master of G Mudmaster GGB100-1A9 

Calibrate it read manual or reset it.

no

Thanks

Change the battery and then reset the watch by touching AC and - (MINUS) with something mettalic (like paper clip)

I have this watch in the blackout version No solar, and no atomic. BUT, it does have bluetooth connectivity and step tracking which the GWG-1000 does NOT have, and the GGB100 is half the price of the GWG. I wanted the GWG-1000 for years, but for half the cost, I have no problem changing batteries. The bluetooth timekeeping works great.

@@InkAndBrass Not waterproof after a battery change

BOOSTEDLASER : did you do it yourself or was it done by a specialist? It should be completely waterproof after a battery change, so big change that the rubber seal is botched. I remember that on a previous g-shock I owned, the rubber seal was also replaced during a battery swap.

@@PieterGroen went to a CASIO place. They even tell you "After battery change watch **MAY**no longer be waterproof" 3 of 3 watches came back NOT water proof. Got ruined in the shower

@@BOOSTEDLASER How do you make sure when battery is changed they are still waterproof? Do you have to send them to Casio?

You wanted sapphire in a 350 watch.... Asshole