CX936S, V394,SG9, 395, 523, LR45 Silver Oxide Button Cell  1.55V High Capacity.

Typically for watches & calculators and miniature equipment 9.5 X 3.6mm. Equivalent to V394, 524, 45, Timex D, AG9, SG9, 395, 523, LR45, RW33, AR45, SR45, GP394

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