Digital mini audio amplifier with Bluetooth. Features: Resistance: 4-16 Ohm, MP3 Playback, Bluetooth V5.0, Ports: USB/AUX/MIC, FM Radio, FM Frequency: 87.5-108MHz, Tremble/Bass/Echo Controls, RMS Power: 70W x 2, Maximum Power: 450W+450W, Channel: 2.0 - Two main channel outputs, SNR: 75 dB, Distortion Rate: 5%, Frequency: 10Hz-20KHz, Voltage: DC 12V or AC 90-240V Remote control. Dimensions: 20 x 19 x 7cm