Edifier R1280DB 2.0 Studio Speakers with Bluetooth/Optical Input – Black – Connectivity: Bluetooth, 3.5mm to RCA, 3.5mm AUX or Optical/Coaxial – Active Bookshelf Speaker System – Total Power Output: 42W (21W+21W) – Frequency Response: 55Hz ~ 20KHz – Wireless Remote Control – Bass, Treble & Master Volume Dials – R1280DB-BK – 12 Months Limited Warranty