Panasonic CR 2450 Lithium coin cell battery, Button Type at Rs 2 piece Jo 1 Binding and Clonally Expanded Memory B Cells Express Germline and Jo Button by Lahara on DeviantArt Learn about the different types of button cells and how they work. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit JO RS 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: JO RS_K0052707