247mAh EB BR830ABY Li Polymer Battery Replacement For Samsung Galaxy Samsung SM R840 Galaxy Watch3 45mm (WiFi Version) SM R845 Galaxy Watch3 PIKA Compatible for SM Samsung Watch Active 2 40mm SM R830 SM R835 R830 Amazon.com: EB BR830ABY Battery for Samsung Galaxy Watch Active 2 40mm. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit MCK835 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: MCK835_K0067275