Silver oxide low drain battery 1.55 V. Watch Battery 397 measures 7.9X2.6mm. Renata 397 is mercury free and has a capacity of 32 mAh. Purchase in increments of 10.
Interchange: Energizer 397, Maxell SR726SW, Varta V397, Rayovac 397, Duracell D396/397, Timex N, Citizen 280-28, Seiko SB-AL, I.E.C SR726 (SR59).
Renata batteries
