DStartec 100PCS SR621SW 364 363 LR621 164 AG1 1 55V Alkaline Button Amazon.com: YKM 20 Pack 364 SR621SW 364 363 LR621 V364 AG1 Battery 1 10 50X AG1 364 397 LR621 531 SR60 1.5V Alkaline Button Cell Watch 10 x 1.55V Button Coin Cell Watch Battery Batteries AG1 S621E SG1 LR60. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 63M101 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: 63M101_K0063106