Panasonic, the world-wide leading manufacturer in high quality, lithium coin cell batteries. Lithium Manganese-Dioxide Coin Cell Battery, 3.0 Nominal Voltage. High Capacity 35mAh, Diameter 12mm, Height 2.0mm. Ten year shelf life. Original Panasonic branded consumer packaging tear-strip 5 batteries per card. Perfect for watches, fitness, Key FOB's or healthcare devices, and other electronic devices.