Amazon.com: VALBEL Battery Replacement for Samsung Galaxy Watch 4 40mm Vervangende Batterij voor Galaxy Watch Gear S4 42mm SM R810 R815U 1 NEW FOR SAMSUNG GALAXY J2 CORE DASH PURE 2018 SM J260 ANDROID GO PHONE Medical device battery JW J2S 1.5 JINWO TECHNOLOGY lithium smart Smartwatch Parts iFixit. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit J2. 048. S Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz Swiss 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: J2. 048. S_K0052633