Genuine Sony SR626SW 1.55V 377 SR 626 AG4 Silver Oxide Watch Battery 1.5v Japan
Other designations: SR626, AG4, 377 Weight (of one battery): 1.81g. Battery size: SR626SW. Type: Silver Oxide. Genuine high energy batteries from Sony that are Ideal For Watches, Calculators, Key fobs and other small electronic products.