Watch Batteries 50kw Solar System Lithium Battery 306ah 51.2V Energy Storage Home Solar 295 763 295 7630 Replacement Watch Battery For Eco Drive Watches ?J015M Amazon.com: Energizer Silver Oxide Watch Battery 397 396 Button Cell. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 506 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: 506_K0066687