Beats by Dr. Dre Solo HD are Ear-Pad (On the Ear) Headband headphones that deliver great listening experience. The frequency range covered by the model is 20 Hz - 20 kHz. With 45 ohms impedance level and 115 dB sensitivity, this pair of Red headphones produces authentic sound. In addition, the wired model comes with a cord which is 1.3 m long.