This time, my Tissot V8 Chronograph. This is an old watch, but I like it.
The case back. It has a snap back case back.
There is no need to lubricate the gasket as it is the Teflon type.
The movement and battery. A simple lever and the battery will pop out. Remember, no metallic tools.
Closer view of the movement and battery.
The new battery.
The new battery installed. As usual, check the watch is working before you close the case back.
After the battery is replaced, reset your watch. The chronograph hands may 'run' i.e. not reset to zero. So your manual will come into play as to how to reset the chronograph to zero. Basically it involves pulling out your crown to the various position and pressing either to top or bottom chronograph buttons.