Dolphin Sp-90 BT Bluetooth 1100 Watt Rechargeable Tailgate Karaoke Speaker System with Included Wireless Microphone, 2600mah Battery, SD/USB MP3 Card Reader, FM Radio, Mini Jack, Mic. & Guitar Inputs 2600mAh Long Lasting rechargeable battery with an input to add an extra battery. Bluetooth, SD, USB, and 3.5mm Auxiliary Input. 6.5mm Mic. Input and Guitar Input can be used together with other inputs for karaoke. Great for tailgates or other outdoor events 1100 Watts (80W RMS) is powerful enough to hear from a great distance. Sound activated LED sunlight that moves with the music.