Wide frequency range for clear highs and lows. The wideband frequency range spanning 12Hz to 24KHz delivers deep bass, rich mid levels, and soaring highs. Hear the detail in every track and stay in tune with all your music. With its twin 1.18 in drivers and Bass Booster, these headphones deliver big sound without breaking a sweat. Plus the in-line remote with mic lets you take control of your Smartphone’s music and calls.  Enjoy enhanced bass with the balanced rigidity and high response Extra Bass Diaphragm, which maintains powerful performance through hours of listening.