PLEASE NOTE: Batteries are sold individually.Murata CR1632 Lithium Coin Cell BatteryPowerful Lithium CellDesigned for use in smaller high-performance electronics, the Murata CR1632 Lithium Coin Cell Battery is the ultimate pint-sized power source! This impressive cell utilizes a powerful Lithium Manganese Dioxide chemistry that not only lets it produce a formidable 3.0 Volts of power, but gives it a massive 140 mAh capacity to keep your device powered through extensive use. The combination of impressive output and lengthy battery life make the CR1632 perfect for key fobs, glucose and heart-rate monitors, and other devices we rely on every day.Features & Specifications: Ideal for use in watches, calculators, medical devices, etc. Mercury-free design Made in Japan Battery Size: CR1632 Battery Chemistry: Lithium Primary Nominal Voltage: 3.0V Nominal Capacity: 140 mAh Shelf Life: 10 Years Dimensions: Height - 0.13" (3.2 mm) Diameter - 0.63" (16 mm) Weight: 0.067 oz. (1.9 g)