Panasonic CR2032 3 Volt Lithium Coin Battery on Tear Strip. 3V Lithium Coin Cell, 3.2 mm x 20 mm, weight 3g, shelf life 10 years. High leak protection, no mercury added. Works within temperatures of -22°F to 140°F (-30°C to 60°C). UL approved. Used for memory back-up, digital watches, car keys, laser pens, fitness appliances and medical devices such as tensiometers and clinical thermometers, among other uses.