... Voltage:3.7V Nominal Capacity:300mAh Application:mp3,mp4,bluetooth,etc. Mp3 battery Specifications:Model:HW502035Nominal Voltage:3.7VNominal ... 20% lighter than aluminium shell liquid lithium cell.3.High capability: The polymer capacity is 10-15% more than ... reduce. Applications:Portable DVD, PDA , Cellular phone, notebook, earphone, bluetooth devices, MP3, MP4,R/C toys, power-driven tools & toy, ...