Quatro V Black and Cool Grey Features The Quatro V is the USB powered speaker that’s got everything you could possibly want! This 2.1 sound system is compact, and yet has all of the following functions built into it: FM radio – for your convenient listening pleasure TF / microSD card slot USB flash drive slot Audio aux-in jack Wireless remote control Relies solely on a 5V USB port found on any laptop or PC Advanced dual bass reflex technology Technical Specifications Total system power (RMS): 5 Watts Frequency response 200Hz-18KHz Satellite driver size: 2″ x 2 Subwoofer driver size: 3″ Impedance: 4 ohm Bass reflector dimension: 2 x (55mm x 70mm) 2.1 desktop speakers Built-in FM radio Wireless remote control TF card and flash drive slots 5V USB powered Control panel with buttons for input mode and music playback function