Big Music 15 Inch Wireless Mic Portable Speaker Trolley Speaker Outdoor Concert With Amplifier Bluetooth

LModel: MD7-12L
Woofer unit size: 12”x1
Output Power: 60w
Power Supply: AC110V-120V / DC9V / DC12V
Battery: 7.4V 1800mAH build-in rechargeable battery pack
Support: FM Radio/USB/SD/BT/Remote Control
Dimension: 360*305*555 mm