Detailed Product Description Professional portable multi-function wireless amplifier DVD player, support DVD, DVCD, SVCD, VCD, CD; ... USB connector: support Flash memory card, MP3, MP4.High sensitivity wireless microphone;Advanced double surface SMT circuitPower source: 110/220V ACBuilt ... -in three 3pcs 6V rechargeable batteries Input jack: 1/4 wired mic jacks, line input jacks, AUX ...