CX621S, V364, SG1, 531, RW320, SR60 Silver Oxide Button cell. 1.55V High Capacity.

Typically for watches & calculators and miniature equipment 6.8 X 2.1mm. Equivalent to V364, SG1, SG1S, 531, RW320, SR60, Timex T. Main use is for ladies and slim watches.

Note: Battery Iilustrations are for identification only. Type numbers and manufacturers may vary. All batteries are high quality brands