Samsung Galaxy Watch 5 (40mm) SM R900 R905U replacement Battery EB 400mah 502020 Smart Watch Battery Fits in most of the Watches Li Po Batteries N Accessories BNA WB P8734 Smartwatch Battery Li Pol, 3.8V MT920 Replacement Watch Battery for B872 B873 B876 B877 A710 A715 A730 Amazon.com: DURNERGY SR920SW Watch Battery 100 Pack, LR920 LR921 370 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