I found this old Flik Flak recently. It was not working. I guess a battery change might solve the problem. So here we go. The first step is of course to remove the battery hatch. Don't forget to remove the gasket/ o-ring for lubrication.
The battery used is the 377 battery. Remove the battery and get a new one.
The gasket enjoying its bath in lubricating grease.
The battery hatch, note the grime and dirt. Don't forget to clean this as this can cause a leakage as the gasket may not sit properly.
The other side of the battery hatch. There is actually a need to clean the entire watch, strap included.
Battery and gasket installed.
The battery hatch is installed. Check and make sure it is secured.
Check to make sure everything is working. As this watch do not have a second hand, we have to wait for a few minutes to make sure everything is working.
Opps I forgot the most important thing is this battery change. The tool. And here it is.
Make sure you use the correct size as we don't want to damage the cut-out on the battery hatch. And there you have it, battery change on a Flik Flak.