Bluetooth 5.0 wirelessly streams audio from a compatible device. True Wireless Stereo - connect 2 speakers via Bluetooth for stereo sound. Fire Light Show - colorful LED lights dance and change to the beat of the music. USB Micro SD and Auxiliary inputs play non-Bluetooth devices. Built-in FM Radio. 1 Mic input. 4" Woofer. Frequency response: 80Hz-18kHz. USB and Micro SD capacity: 32GB. Rechargeable 1500mAh battery. DC5V Power supply.