12 Pack 3 Volt Lithium Button Battery, Coin Battery CR2032

[About] Quantity: 12 Batteries Type: Lithium Coin Cells Model: CR2032 Voltage: 3V Capacity: 210-220mAh Diameter: 0.78″ [Information] Additional Information: Use FORMULA to get approx. battery life: Coin Cell Capacity / (# of LEDs x 20) = Battery Life (approx.) Uses: Designed to work with remotes, watches, key entry, computer motherboards, PDAs, calculators, door chines, electronic organizers, garage door Openers, games, toys, MP3 players, voice recorders, LED lights, PET collars, pedometers, calorie counters, medical devices, and many more devices!