TTfone Original Compatible Spare Battery for TTfone TT100 Big Button BUTTON CELL,SHENZHEN LIDEA BATTERY CO., LTD. 4 Pack Button Cell Batteries CR2032 Kmart Rechargeable Button Coin Cell Battery 12X4.5mm Size Cell Button. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 204 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: 204_K0066731