2BOOM Bluetooth 2.1 Stereo Sound System Streaming Speaker with Subwoofer - Black 2BOOM(TM) CSP440BT 2.1-Channel Sound Thruster Bluetooth(R) Speaker Specifications: ? 4" subwoofer? Bass duct technology? Includes instruction manual &amp; USB charging cable UPC : 724500659468 Shipping Dimensions : 13.50in X 10.80in X 7.00in Estimated Shipping Weight : 12.14