10 x 1.55V Button Coin Cell Watch Battery Batteries AG1 S621E SG1 LR60 10 x 1.55V Button Coin Cell Watch Battery Batteries AG5 AG 5 LR750 Amazon.com: POWEROWL SR626SW 377 Watch Battery 24 Pack High Capacity 10 x 1.55V Button Coin Cell Watch Battery Batteries AG7 AG 7 LR927 How to Change a Watch Battery Yourself: Step by Step Guide. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 778 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: 778_K0066621