Renata Silver Oxide Battery - Superior Leakage Resistance 362 SR721SW | Nominal Voltage - 1.55V | Nominal Capacity - 23 mAh High capacity retention on storage (low self-discharge) Swiss quality and consistently great performance, battery after battery. Works for toys, watches, cameras, calculators, car security alarm, keyless car remotes, organizers, computer equipment (memory backup battery) CMOS Renata 362 SR721SW Battery - 1.55V Silver Oxide Watch Battery - Renata has first hand knowledge of what a high quality watch battery must stand for. With our comprehensive range of over 40 different types of watch batteries, Renata can supply a suitable power source for any electronic device requiring an ultra-compact, long-lasting, low-voltage source of power.