othermark, 1 year ago Watches have been 50m/100m water proof for years with replaceable off the shelf button batteries. You just unscrew the back, replace the battery, make sure the seal isn't damaged and in it's little track and screw it back on. This is seriously not rocket science.
Watches have been 50m/100m water proof for years with replaceable off the shelf button batteries. You just unscrew the back, replace the battery, make sure the seal isn't damaged and in it's little track and screw it back on.
This is seriously not rocket science.