Specialty Batteries: Type - Silver Oxide Battery; Primary Application - Watch, Electronic Battery; Cell Style - Button; Voltage - 1.5V; Capacity - MAh - 70 MAh; Terminals - Flat Terminals; Height - 0.210 in(5.3 mm); Diameter - 0.311 in(7.9 mm) Dia; Industry Part Numbers - D309/393, 309, 393; NEDA Listing - 1136SO/1137SO; IEC Listing - SR54/SR48; Packaging - Carded