https://braun-clocks.com/collections/digital-watches
https://cdn.shopify.com/s/files/1/0278/8851/7235/collections...
https://i.imgur.com/FpZoLif.jpg
https://www.aliexpress.com/wholesale?catId=0&initiative_id=S...
Or do you want a brand name that you know attached to it?
Why not pick the Li-Ion cells in your devices by brand name, too?
Come on, this is ancient tech, any $5+ watch works well.
I tend to buy Samsung cells.
I do, I buy Samsung 18650 cells