Help on Changing a Watch Battery, Which Battery Charger, Different Consistent Watch Battery Replacement R21588102 Boston Watch and Clock Repair Watch repair: service, fix, shop Help on Replacing your Watch Battery from WatchBattery (UK) Ltd. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit R21588102 Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz Swiss or Chinese or Japanese Movement Water Resistance Compatibility: Suitable for 50m Water Resistant Watches Mercury Free: Environmentally Friendly (0% Hg) High Low Temperature Tolerance: Extended Performance in Extreme Climates SKU: R21588102_K0063176