ZB4BL432 Projecting push button head 40mm, Harmony XB4, metal, red ZB2BL432C Push button head, Easy Harmony XB2, metal, projecting, red 140PCS Round Tactile Button Cap Kits 9.58*5.1mm for 12*12*7.3mm Tact XB2BS542 Telemecanique In stock and ready to ship Santa Clara Systems. 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