Sony SA-D40 C E12 4.1 Channel Multimedia Speaker System with Bluetooth (Black) Enjoy movies and TV programs with family and let your home thunder with powerful bass and wider sound effect of multimedia speaker SA-D40.This stylish 80W 4.1ch multimedia speaker feature Bluetooth connectivity along with USB and audio inputs, So you can enjoy your favourite mobile songs with enhanced sound. Just one cable required to connect and is easy to control by the simple and user friendly remote controller. CENTRE SPEAKER RATED IMPEDANCE:4ohms  CENTRE SPEAKER FREQUENCY RESPONSE:40Hz-150Hz  FRONT SPEAKER RATED IMPEDANCE:10ohms  FRONT SPEAKER FREQUENCY RESPONSE:150Hz - 20kHz  FREQUENCY RESPONSE:40 Hz–20 kHz  SURROUND SPEAKER FREQUENCY RESPONSE:40 Hz to 150 Hz  SURROUND SPEAKER RATED IMPEDANCE:4 ohms  What's In The Box:Remote Commander, AC Adapter, AC cord, Stereo Mini Cable, Foot Pads