Rosewill R-Studio Bluetooth Wireless 2.1 Speaker for Computer and Tablet (SP-4310BT) 33 feet Bluetooth operating range- playback music wirelessly from your smartphone and mobile device Down-firing subwoofer with immersed bass to let you experience your music Tilted angle design of the satellite speakers project audio for the ultimate listening experience Use as 2.1 computer speakers via a wired connection or as wireless Bluetooth 2.1 speakers Control: Power On/Off, Volume Knob, Bass Knob, Audio Source With Immersed bass to let you experience your music Central access for volume, bass, and audio source control Adds more depth and body to your music, producing a tight sound that's not overwhelming