... .0 interface, SD / MMC expansion cards and LAN-IN interface, LAN-IN interface interface external mp3, notebooks, MD, CD audio ... , PVC Diaphragm speakers to enhance the treble part, sound Qingli clean up fully, without any impurities, and ... lithium······High performance dual speaker······As a speaker,an external sound source······Recording function·--·-·Repeat function·--·-·The lyrics display·--·-· ...