Apple A2727 EMC 8093 replacement watch battery UAEBattery High Quality Watch Battery MK2078 Watch 1 38 Series Original Battery at 230 Smart Watch Battery in A1578 Battery for Apple Watch (38 mm, Original & Series 1) Apple A1578 replacement watch battery UAEBattery Apple A1578 replacement watch battery UAEBattery. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit MK2078 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: MK2078_K0067250