ZB4BL432 Projecting push button head 40mm, Harmony XB4, metal, red Siemens A6X30142948 PUSHBUTTON. YELLOW,22mm ZB2BA432C Push button head, Easy Harmony XB2, metal, flush, red, 22mm S269cd338b5cc4a599478d50b464474ffe.jpg. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit R21540742 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: R21540742_K0063762