1.600mAh Ni-Cd Replacement Battery for Sony BP-T50 2.Model:M3550 3.Voltage:2.4V 4.Capacity:600mAh 5.Made in China 600mAh Ni-Cd Replacement Battery for Sony BP-T50 Fits Sony SPP-N1000, SPP-N1000WT, SPP-N1001, SPP-N1003, SPP-N1004 and several RadioShack models Can be used to replace a Sony BP-T50 battery Delivers 2.4 volts with a capacity of 600mAh 600mAh Ni-Cd Replacement Battery for Sony BP-T50