Small Watch Battery Sizes at Liza Tubbs blog Watch Batteries Silver Material, Varying Sizes & Voltages Durable How to Replace Two Stacked Watch Batteries Esslinger Watchmaker Replacing A Watch Battery How to Choose the Right Watch Battery The Tech Diary. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit COL ROB BST Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz 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: COL ROB BST_K0067128