100% Original Renata Premium Battery EOL Optimized Extended Lifetime 3.87V 470Mah 78 Bw40 Battery For Xiaomi Color2 Watch S1 Smartwatch Goshyda EB BR720ABE Battery 3.8V 250MAh Smartwatch Battery Replacement 45mAh Smartwatch Battery For Fitbit Alta HR,Alta Activity , Part Number WATCHGUARD VISTA REPLACEMENT BATTERY 3.7 VOLT 4050 MAH 14.99 WH FRESH Looking for a reliable watch battery?This video tells you everything. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit BU4052 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: BU4052_K0070683