Renata are part of the Swatch Group so I assume would have a vested interest in quality required for watches. Energizer Coin Cell batteries are also used for glucose monitors, pedometers, remote controls, and other small devices.

I bought all of this on the understanding that the end result would look rubbish and I would give up after the first attempt so I went cheap on the tools. Renata 397 Watch Battery Swiss Made Batteries 397 Sr726Sw V397 D-397 N 280-28 Sb-Al Sr726 Sr59 Silver Oxide 1.Rayovac Batteries provide Long lasting energy for watches, remote controls, medical devices, and more. A range of Renata watch batteries including the most popular sizes, Renata 364, Renata 371, Renata 377, Renata 379 and Renata 399. In addition, these batteries can be placed in analogue and digital watches, as well as calculators, toys, and other portable electronics. By making the battery containers harder to open, the company is striving to make its packaging safer and child-resistant. It just depends on if you (or the client) want to keep the watch as close to 'original' as possible.

Mercury free with Long Expiry date Renata 364 SR621SW Watch Battery, Renata's make over 40 different watch battery types, mostly. Coin Cell Renata 395 SR927SW Watch Battery, Renata's make over 40 different watch battery types, mostly silver oxide 1.Coin Cell, with Long Expiry date Renata 379 SR521SW Watch Battery, Renata makes over 40 watch battery types, mainly silver oxide 1.