This 3V lithium coin battery. Ideal for watches, heart rate monitors, keyless entry, toys and games, and other devices. High-energy density, long life power source. Holds power for 8 years in storage. Replacement for 280-208, BR1620, CR1620, DL1620, and ECR1620. Cell size: 1620. Battery power type: Lithium. Voltage: 3V. Battery capacity: 79 mAh. Dimensions: 2 mm H x 16 mm Dia. Shelf life.