1 portable loudspeaker 2 with FM TF USB function 3 loud voice ,2000 mAh 4 with reverberation 5.with headset,adapter,belt portable amplifier Key Specifications 1, material plastic2, output RMS 40W x 13,response frequency 100HZ-18KHZ 4, speaker unit Φ40mmx2/4Ω 5,S/N ≥75db6,input power DC 9V7,li-on battery 7.4V 2000mAh/rechargeable8,support U flash disk,sd card,FM .Suitable for devices equipped with ...