The RP-DJ1200 is designed to fit the needs of the professional DJ, providing excellent sound quality and incredible bass in both standard and one-sided monitoring modes. High quality sound designed to deliver clear, high-quality sound even at very high volumes High Input & Wide Frequency Range Driver Driver units: 41mm (1 5/8in.) Diameter Frequency response: 5 Hz - 30Khz Folding Swing Arms What's in the box 1 x Professional DJ Headphones