You can actually get the tool needed for this gasket/battery change, and it’s much easier to use. Trust me, when I worked in the jewellery industry I changed batteries on an almost daily basis.
This one is for the push-through pins:
The watch repair tool kit comes with everything you need to start working on watches. The kit contains tools to change watch batteries, remove watch band links and much more making watch repair a snap.
www.esslinger.com
This one is for every kind, so push through, screw in, it contains everything you need for watch repair resizing, etc. Yes, it’s nearly $70, but it’s so worth it … if you want you can charge other people to change their batteries, and make your money back in a heartbeat:
A must for any watchmaker of any level, beginners will love it. These tools will allow you to open most any type of watch and service things like; replacing watch gaskets, replacing watch battery, replacing watch crystal, replacing watch crown, replacing watch movement, sizing watch band...
www.esslinger.com