Although I have slowed down on me doing my own servicing, battery change and all, there are some that I still do by myself. One of the watches I enjoy doing the battery change is my Casio MD703 series watches.
Sadly I don't use them as much as I use to.
The Casio MD703 white dial (now off white).
The new battery.
The process, not in detail...
Remove the case back.
The movement exposed, with the spacer intact.
Remove the spacer.
Remove the old battery. Do not use metal tweezers and also try not to use your fingers. Do remember to inspect the seals and lubricate.
Putting on the case back. I find using a bit of Rodico helps to position and turn the case back (removal and installation). And we are all done. :)