A-024 PortableSpeakerMP3KeySpecifications/SpecialFeatures: Material:plasticMemory:2GB 4GBand8GBExternalmemory:SDcard(maximum4GB)Display:1.4-inchLCDscreenMusicformats:MP3andWMAOutputofspeaker:3Wx2SNR(signaltonoiseratio): 75dBBuilt-inrechargeablelithiumbattery:3.7V,1,200mAAvailablepowersources:battery,DC,andUSBWithFMscanradio88.0to108.0MHzOtherfunctions:RecorderFMorparticularMP3fileasalarmDigitalalarmclockDigitalclockCalendarUsethenumberkeysontheremotecontrol,youcanselectmusicyoulikeConnect3.5stereoaudiocabletothesocketof linein,youcanplaymusicyoulikePoweramplifieroutput:RMS3Wx2(THD=10%,f=1kHz)Sensitivity:470mVPoweramplifiersignaltonoiseratio:95dBALineimpedance:10KohmsSpeaker:1.5-inch,anti-magnetic,4ohmsInputvoltage:5VDCDimension:85x85x90mm Weight:274G