Bluetooth v4.2 with 15m range; Audio Input via AUX & TF Card 4” Speaker Trolley Speaker System Built-in USB MP3 Player to enjoy music. Recording Function to record voice, speech or songs to USB or SD card disco speakers – get the party started. Play your favorite tracks as loud as you want and with style. Toutle Super bass feature impressive high-power output and dj lights that will add life to any occasion. 3.5mm Earphone/mic compatible. Note : Connect the usb side to either laptop or through adapter to any power source and 3.5 mm pin to music source. Built In Rechargeable Battery to play music up to 4 to 5 hours. Power Source: USB Cable. Extra-long and rechargeable 1500mAh allows you enjoy up to 5 hours of playing time.