Support reading and playing MP3 songs in TF card and U disk. Supports self-adjusting treble, bass and master volume. Support AUX audio input, connect to PC, phone, TV or DVD. Dual mic input with adjustable reverb with bluetooth and FM radio. Supports wired microphones and wireless microphone boards (not included). Name: Power Amplifier Board bluetooth version: 5.0 Audio channel: 1.0 Rated resistance: 4-8Ω Rated power: 100W Power range: 100-300W Distortion: 0.03% Signal-to-noise ratio: 92dB Features: FM radio/treble/bass Voltage: AC 220V, DC 12V ~ 24V Input: Bluetooth/3.5mm AUX/U disk/TF/6.5mm MIC Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Voltage:AC100-240V Color: Black Material: Iron Package Contents: 1 * power amplifier board 1 * remote control 1 * speaker cable 1 * DC plug 1 * power cord Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.