Eunicell 364 SR621SW Watch Batteries (10 pack) Silver Oxide AG1 Battery 1.55v

Eunicell 364 SR621W 1.55 VOLT SILVER OXIDE BUTTON / COIN CELL BATTERIES. D364, SP364, 602, 280-34, SB-AG/DG, SR60, SR60L, 531, SR621, GP364, SR621SW, T, V364. The 364 silver oxide battery is commonly used in watches.

eBay