Watch Batteries are available on best price at Universal Watch Parts Precise C0820023 Watch Battery Understanding Smart Watch Battery: Battery Life and Safety Analysis SR626SW Watch Batteries 377 x 2 Seizaiken Equivalent Cell Button. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit C0820023 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: C0820023_K0054726