Watch Batteries 3.7V 160mAh 0.59Wh Smartwatch Battery, Replacement Battery Compatible 15 321 Energizer Watch Batteries SR616SW Battery Cell Walmart.com Amazon.com: Energizer Watch Batteries 364 363 SR621SW Battery New 5. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 15688_3 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: 15688_3_K0051407