1.Mini HIFI digital bluetooth audio power amplifier. 2.Aluminum alloy body, , the body is made of aluminum alloy once, the anode treatment, the overall atmospheres, thick, feel is also very good. 3.for SD Card, U disk, AUX input, MP3 format play, support bluetooth wireless connection. 4.Supports FM stereo radio. 5.Low distortion supplies a clearer, stronger and more powerful sound. Input voltage: DC 12V/ AC 220V RMS power: 20W+20W Max power: 200W+200W Channel: 2CH Load impedance: 4-16 SNR: 90 db Frequency: 20Hz-20KHz Distortion rate: 0.01% With Remote control function. Two main channel output. The machine supports bluetooth operation, and supports line input Color: Black Material: Metal Package Contents: 1 Amplifier 1 x Remote Control(The color of the remote control is random due to different batches, and the specified color is not accepted) 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.