Brand: Renata. MPN: 329. High capacity retention on storage (low self-discharge)   Swiss quality and consistently great performance, battery after battery.   329 SR731SW   Nominal Voltage - 1.55V   Nominal Capacity - 37 mAh   Works for toys, watches, cameras, calculators, car security alarm, keyless car remotes, organizers, computer equipment (memory backup battery) CMOS   Renata Silver Oxide Battery - Superior Leakage Resistance