Benwin 2-piece FX USB-D 2.0 Multimedia Speakers 2-piece Benwin FX USB-D 2.0 True Multimedia Speakers General Features: Black wave design USB Powered Volume control Technical Specifications: Total output (RMS) 3w + 3w Total power output (PMPO) 48w Frequency response 60 Hz - 20 KHz Impedance 4 Ohms Speaker Specifications: 2.75-inch Full range 1-inch Neomanic Microfoil