Product Description Description: AK380:(Support Bluetooth /SD Card) Specifications： --Amplifier type: hifi power amplifier --Color: Black --Size: 155x85x45mm/6.1inx3.3inx1.7in --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 Ω --Power amplifier type: hifi amplifier --Material: aluminum alloy --Interface type: clip --Receiving mode; audio input --Weight: 0.35 (kg) Specifications: 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. -for SD 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. The power amplifier can be connected to mobile phones, computers, tablets, notebooks, MP3 players, televisions and projectors with AV audio (lotus socket) or 3.5mm headphone output holes, etc. All kinds of mobile phones on the market can be connected by Bluetooth, which can realize wireless playback. Package Included: Package Included: 1 x Power Amplifier 1 x Remote Control 1* Radio antenna 1* instructions 1* power adapter (optional) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.