Amazon.com: Energizer 321BP Watch Battery : Health & Household Now Introducing: Ship In Watch Battery Service The Jewelry Center Recyclable Watches Battery Replacement 321 Complete guide to replace a watch battery: methods, prices and Energizer 321 Watch Batteries, SR616SW Battery Cell, Silver Oxide, 5. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 321 Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz Swiss 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: 321_K0066716