Features:<br />- Bluetooth Karaoke Speaker System<br />Lets you stream music from most Bluetooth-enabled devices， including select mobile phones， MP3 players， computers and tablets.<br /><br />- Built in rechargeable Battery Pack & Mains Operation<br />Sing or Talk Present anywhere， this is truly a portable mini PA System， recharging the system takes a few hours from the supplied mains adapter<br /><br />- Built in MP3 Player<br />Play your favourite songs from TF Card or USB sticks<br /><br />- Remote Control Included<br />Easily select functions with the remote control，<br /><br />- Bass and Treble Controls<br />Built in audio mixer with Bass Treble and Echo facility<br /><br />- Auxiliary Input<br />Connect Keyboards， Guitars， or other devices via the jack socket in the rear<br /><br />- Extra Microphone Socket<br />A third singer can connect a cabled microphone to the rear of the unit<br /><br />- LED Light Display<br />Get the party started with the in built LED Light display<br /><br />- How to install battery ? (IMPORTANT)<br />On the back， there is a battery storage space at the bottom.<br />Unscrew the screws of the four corners on this space.<br />Find the red "+" Line， and black "-" line， and weld it into into your 12V 4.5A Lead acid battery.<br />Note: Please check the "+" "-" Pole Note and connect it correctly . Or the mainboard might be damaged by wrong pole connecting!<br /><br />Specifications:<br />- Color: Black<br />- Size: 305x258x490mm(approx)<br />- Voltage: 220V<br />- Output power: 300W<br />- Built-in battery: 7.4V Lithium battery(Not Included)<br />- Product Size: 8"<br />- Package Weight: 3.85kg<br /><br />Package Included:<br />1x Portable Blurtooth Speaker<br />1x Wired Microphone<br />1x Remote control<br />1x Cable<br />1x English User Manul