This is a SONY made battery, in SONY sealed package. InfoLithium "C" type battery, 3.6 V , 780 mah. (This is the newer version , higher capacity battery than the old NP-FC10 battery, Dimensions is still the same at 2" L x 7/8" W x 7/16" H.

It fits models: DSC-F77 DSC-FX77 DSC-P10 DSC-P2 DSC-P3 DSC-P5 DSC-P7 DSC-P9 DSC-V1 and provides longer playback and recording.