Energizer 377 376 Watch Batteries, 1.55V Silver Oxide, Multi Drain, 5 MBS AG4 LR626 377 SR66 1.5V Alkaline Button Cell Watch Batteries, 10 Amazon.com: Energizer 377 376 Watch Batteries (Pack of 5) : Health Amazon.com: SR626SW Watch Batteries 377 376 AG4 LR626 1.55V Button Cell. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 15677_6 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: 15677_6_K0051423