Energizer Coin Cell Battery, Chemical System: Lithium/Manganese Dioxide, 3 V Nominal, 240 mAh Nominal, 2032, 10 – 40 ohm Internal Impedance, 8 years Shelf, 0.787 in Diameter, 0.126 in Length, -22 TO 140 deg F, ANSI Specified, NEDA 5004LC, IEC CR2016, UL Listed, For Calculators, Keyless Entry, Games, Glucose Monitors, Toys, Watches