As a silver oxide battery, the Maxell 399 SR927W is perfectly suited for any task. With low self-discharge, stable output voltage, and the ability to work with high current demands, the Maxell 399 is a reliable battery in any state. As a coin cell battery, the Maxell 399 is perfect for keyless remote entry systems for cars and homes, watches, calculators, digital thermometers, glucometers, heart-rate monitors, and small electronic toys. Not to mention that the Maxell 399 is operable in temperatures ranging from hot to cold and has a shelf life of 5 years. Brand / Type: Maxell Model: 399 SR927W Chemistry: Silver Oxide Output Voltage: 1.55V Height: 2.73mm Weight: 0.375lbs Diameter: 9.5mm Capacity: 57-60 mAh Equivalent Battery Types:CR927, Energizer / Eveready 399, Rayovac 399, Renata 399, 35, Varta V399, V543, Seiko SB-BP, Citizen 280-44, Timex W, New Tec SR927PW, Duracell D399, Bulova 613, GP GP399, IEC SR57, SR927, SR927SW, SR 927, SR927W