8” Bluetooth trolley speaker with built-in rechargeable battery. USB & SD card reader for MP3, AUX input, Mic. input with included microphone, Guitar input (guitar not incl.), 40W RMS volume output. Features: FM radio with built-in antenna, Recording function (record to USB stick), Karaoke microphone with 2.5m cable included, Guitar input - jack plug, LED display on top, Power Output: 40W RMS, 12V 4500mAh lead-acid battery inside (3-5 hours playtime), Works both with built-in battery and with AC/DC 230V connection, Volume knob, master, treble, mic & echo, Speaker size: 8'' coaxial speaker, Telescopic handle for easy transportation, Remote control included, AC/DC adaptor for charging included.