Three half size AA batteries, shrink-wrapped together with two wires and a two pin connector. 3.6 Volt NiCad Cordless Phone Battery. Fits models; GE 2-6730GE9-A, GE 2-9752B, Pacific Bell 2-9778A, Southwestern Bell 2-6730SL2-B, Southwestern Bell FF1185, Southwestern Bell FF1188, Southwestern Bell FF1710, Southwestern Bell FF1710B, Southwestern Bell FF1719, Southwestern Bell FF1720, Southwestern Bell