This audio amplifier is small in size and easy to operate, you can use it at home, and carrying it to your car is also very convenient. Features: It is a mini power amplifier for 2.0CH speakers. With LCD display, backlight design. Supports FM radio function. With remote controller, full-featured remote control is supported. Can read U-disk and memory card, plug and play, Supports BT wireless connection. Treble, bass and volume adjustment buttons for easy operation. Left and right channel output, rated power 20W + 20W. Specifications: Color: black Material: aluminum alloy Power: 20W * 2 Load impedance: 4-16 SNR: 90db Frequency: 20Hz-20KHz Distortion rate: 0.01% Remote battery: CR2025, 3V, 150mAh Item size: 125 * 75 * 40mm / 4.9 * 3.0 * 1.6in Item weight: 250g / 8.8ounce Package size: 133 * 113 * 50mm / 5.2 * 4.4 * 2.0in Package weight: 300g / 10.6ounce Note: Package without battery and plug(for power amplifier), you need to prepare your own power-supply. Packing List: 1 * Power Amplifier 1 * Remote Controller 1 * User Manual