Axess HP601-BL Professional DJ Headphone, Soft Padded Rotatable Ear Cups (Blue) Professional DJ Headphone, Rotatable headphones for easy storage and mobility Large soft ear pads, Lightweight materials to create a comfortable and easy to wear headphones Driver Units: 40mm, Frequency Range: 14Hz-20,000Hz Sensitivity: 115 dB (at 1KHz 1mw), Impedance: 32 ohms Cord Length (approx.): 7.5 ft., Cord: Single-sided, Jack: 3.5mm, nickel-plated