... 5.Build-in battery. Fm Radio Usb SD Card Reader Speaker Specification1.Built-in recharheable lithium battery NOKIA 5C ... 7Hrs.7.Box size: 220*116*46mmFeature:Support Support SD card, Calendar, alarm clock, synchronized song lyrics, power ... audio port,connected with mobile phone,laptop,MP3,portable DVD etc Technical parameterOutput power:RMS 3Wx2Frequency: ... *37515.5KG Fm Radio Usb SD Card Reader Speaker