Features: Stylish appearance-aluminium sliver star-style housing Ultra-convenience, lightweight and　simple motion-simple connection Heart-quaking sound-high efficient "Class D" digital amplifier with first-class bass booster produces sounds of nature Advanced "class D" technology-the combination of advanced "class D" technology and plentiful experience Full stereo effect-the disconnection between docker and satellite speakers enables you to adjust the ideal distance Remote control, Docking station-resting your MP3 Functions: Suitable to connect with any USB storage devices and MP3 player Charge MP3 player Remote controller: elegant, integrated controls both in iPod/USB drives/MP3 player, power, tone and volume Built-in 2 x 5W digital amplifier with two aluminium satellite speakers that output crystal-clear sounds Moving satellite speakers to adjust the distance ensures the full enjoyment of stereo effect Specifications: Front Speaker: Meas.: H128xW64xD42MM Weight: 282g Transducer: two full-range units, F32mm, aluminum cone, neodymium Magnet with shielding shell Impedance: 8 ohms/Unit, 4 ohms total by parallel 2 transducers SPL:> 90dB at 0.1 MxW, Frequency response:150Hz-20kHz +/-3dB RMS power: >4W Maximum Power:>8Wrms at 1min. Docker: DC power supply: 15V 700mA,hi-efficiency switching power supply GS/UL/BEAB certified AC power supply: optional for worldwide line voltage Dimensions: 88 x 88 x 41mm Weight: 174g Power amplifier: 2x5W rms, Digital power amplifier S/N ratio:>70dB Channel separation:>60dB THD:<0.1% at 1kHz, 1W, 4ohms Load: 4-16 ohms Amplifier efficiency: >90% (green products) Freq. response: 20-20kHz +/-1dB Total consumption: 5W at normal volume Standby consumption: <0.5W (green products) Special function additional: USB OTG Hosting, suitable for all USB pen-drive and MP3 playback Remoter: method: IR (infrared ray) digital modulation Frequency: 38kHz Work distance: > 7M