Specification      
Power suppler: AC110V-240V      
Built-in rechargeable battery: 1PCS of 18V 10AH      
Frequency response: 35Hz-20000Hz      
Frequency range: 175MHz-280MHz      
Speaker: 8" bass, 3" treble      
RMS power: 250W, peak: 480W      
Input jack: 1/3 wired mic jack, line input jack, RCA video      
Output jack: Sound channel output jack      
Receive distance: 25-40m      
Dimension: 32.5*30*39.5 (cm)      
Weight:      
MP3, SD card, USB jack, DVD and cassette      
1PCS of high sensitive wireless microphone      
1PCS of body-pack transmitter      
1PCS of headset microphone      
1PCS of each MP3 and DVD remote control      
1PCS of user manual      
2PCS of 9V battery, 1PCS of power cable(built in transformer)      
Packing: Master carton+inner box+PE foam