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: Mini HIFI digital bt audio power amplifier. Built-in LCD display, with backlight function. Memory Card, U disk, MP3 format play, support bt wireless connection. Supports FM stereo radio. Two microphone input slot, karaoke system in your home or in car. With treble, bass, and volume control, very easy to use. Low distortion supplies a clearer, stronger and more powerful sound. Two main channel output. With remote control function. DC/AC power in, suitable for both home and your car. Specifications: Color: black Load impedance: 4-16 SNR: >92 dB FM frequency: 87.5-108MHz Distoration rate: 0.05% Frequency: 10Hz-20KHz Sensitivity: 0.25mV-220mV Battery: CR2052, 3V, 150mAh Item size: 180 * 136 * 55mm / 7.1 * 5.4 * 2.2in Item weight: 920g / 2.0lb Package size: 190 * 188 * 62mm / 7.5 * 7.4 * 2.4in Package weight: 1180g / 2.6lb Note: Each batch of products will be slightly different due to different production batches, please kindly understanding. Package List: 1 * Audio Amplifier 1 * Remote Control