Samsung Galaxy Watch 5 40 mm Battery Model EB BR900ABY Samsung Original Replacement Battery EB BR820ABY F Grandado Amazon Watch Batteries Sr920Sw at Sam Cawthorn blog Powerful Watch Battery BU9020 600mAh Reliable Power Lightweight Smart Watch Battery For Tag Heuer. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit BU9020 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: BU9020_K0063130