Shipped from warehouse in Poland, delivered within 7 days AK380:(Support Bluetooth /SD Card) Specifications: --Amplifier type: hi-fi 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 --Power amplifier type: hi-fi amplifier --Material: aluminium 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. Package Included: Package Included: 1 x Power Amplifier 1 x Remote Control 1* Radio antenna 1* instructions 1* power adapter (optional)