... :HW502035 Nominal Voltage:3.7V Nominal Capacity:300mAh Application:mp3,mp4,bluetooth,etc. Mp3 battery Specifications:Model:HW502035Nominal Voltage:3.7VNominal Capacity ... . Applications:Portable DVD, PDA , Cellular phone, notebook, earphone, bluetooth devices, MP3, MP4,R/C toys, power-driven tools & toy, camcorder, digital ...