Specification sd card sound box: 1.LED display 2.Remote control 3.FM radio,built- ... in Lin-ion 4.USB cable/remote contr Features:This sd ... charged when playing by plug in straightly.1)Support SD/USB/SMM card, Auto play function2)with Aux-in ... , a very good friend for tours & outdoor activities.7)LED display, with remote control,Support FM radio (optional) 8 ...