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- Location: Vancouver, BC
We recommend and use Sony silver oxide batteries, made in Japan.
Our watch maker with 40 years experience says Sony are his preferred choice. He has seen many watches with damage from batteries. When a watch comes in with a leaking battery it is often a (Swiss made) Renata. Also, don't bother with alkaline, they don't last.
There are exceptions: Many sport watches like G-Shocks and Timex use the bigger CR coin size batteries with lithium instead of silver oxide. No problems with lithium. But again, selecting Sony is a good idea.