Silver oxide high drain battery 1.55 V. Watch Battery SR721W measures 7.9 x 2.1mm. SR721W is mercury free and has a capacity of 24 mAh. Must purchase in increments of 10.
Interchange: Energizer 361, Renata 361, Varta V361, Rayovac 361, Duracell D 361/362, Timex X, Citizen 280-53, SB-BK/EK, I.E.C SR721 (SR58)
Renata batteries
