399 Watch Battery SR927W and equivalent button cell batteries SR927W Renata 379 Watch Battery High Quality, Efficient, Long Life Strip of Brooklyn Battery Works Alkaline Watch Battery, Size LR54 V389 389 AG10 Lot Large Assortment Of Watch Batteries 395 399 Maxell Watch Battery Strip of 5 Watch Batteries Batteries Direct. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 3899 B 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: 3899 B_K0064032