Compatible with over 40 types of watch batteries, especially for watches with 1.55V system. Provides a suitable power source for any electronic device that requires a compact and durable battery. Specifications: Battery Capacity: 20.0mAh Battery technology: Silver Oxide (disposable). Diameter: 6.8 mm. Height: 2.1 mm. Voltage: 1.55V Replaces: 280-34, 364, 602, AG1, D364, G1, GP64, L621, S14, SB-AG/DG, SBAG-DG, SG1, SP364, SR60, SR621, SR621SW, T, TR621SW, V364.