Silver oxide low drain battery 1.55 V. Watch Battery 317 measures 5.8X1.6mm. This battery is mercury free and has a capacity of 10.5 mAh. Purchase in increments of 5.
Interchange: Energizer 317, Maxell SR516SW, Varta V317, Rayovac 317, Timex CA, Citizen 280-58, Seiko SB-AR, I.E.C SR516 (SR62).
Energizer batteries