... .5*20*42.5cm 50pcs/ctn This product has a fashional design, Not only the tone is perfect, ... the electrocircuitIt can be used with computer, mobilephone,mp3,mp4 and various players Products accessories:1 pcs mini ... Perfect stone Disk U , TF card,mobilephone card, mp3,mp4,wma docs playerAux Mode can be receive CD, ... ,4 0h msBatteryLi-ion 3.7v,600MAH1.Play Mp3 format music from USB TF.2.Press mode key ...