Features: * Mini hifi digital bluetooth audio power amplifier. * Aluminum alloy body, durable, the body is made of aluminum alloy once, the anode surface treatment, the overall atmospheres, thick, feel is also very good. * Fit for storage card, U disk, AUX input, MP3 format play, support bluetooth wireless connection. * Supports FM stereo radio. * Low distortion supplies a clearer, stronger and more powerful sound. * With Remote control function. Specification: Name: hifi power amplifier Material: aluminum alloy Rated voltage: 12V RMS power: 40W+40W Max power: 400W+400W Rated frequency: 20-20KHz Resolution: 47K Distortion rate: 0.1 SNR: 90dB Impedance: 4-16 Interface type: clip Receiving mode: audio input Size: 155x85x45mm/6.1inx3.3inx1.7in Color: Black Packing included: 1 x Power Amplifier 1 x Remote Control Note: 1. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting.