Amazon.com: POWEROWL SR626SW 377 Watch Battery 24 Pack High Capacity 20x Energizer 377 , 376 Watch Battery 24mAh 1.55V 1 Blister SR626SW Amazon.com: POWEROWL SR626SW 377 Watch Battery 24 Pack High Capacity 2 x Duracell 377 1.5 V Silver Oxide Watch Battery Batteries SR626SW AG4. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 3668 WM 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: 3668 WM_K0064138