[A1578] OEM Replacement Battery For Watch Series 1 S1 38MM Polar Tech High Quality 15678_4 Watch Battery 100% Tested Original For Apple Watch Series 1 for Series 1 A1578 A1579 Battery Apple HubWeb.cn Apple Watch 1 2 3 4 5 Se 6 Iwatch 4g S1 S2 S3 Gps Lte 100% Orginal Batteries Replacement For Apple Watch Series 1 2 3 4 5 6. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 15678_4 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: 15678_4_K0051418