4000W Speaker unit:Woofer 10 2+Tweeter 32. Sensitivity:85dB±2KHz Rechargeable Battery:12V/4500mAh. Includes Wireless Mic, Remote, And Built in Bluetooth/USB/SD/Aux. The item "Dual 10 inch Powered Bluetooth Portable Rechargeable Speaker USB SD 2x10 Party" is in sale since Friday, March 9, 2018. This item is in the category "Consumer Electronics\Portable Audio & Headphones\Portable Stereos & Boomboxes".The seller is "mzsolutions" and is located in Elk Grove, California. This item can be shipped to United States.