Behringer HPM1000. Ear coupling: supraaural, Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 105 dB. Connectivity technology: Wired, Cable length: 2 m. Dimensions (WxDxH): 229 x 203 x 102 mm, Weight: 0.907 kg. Maximum input power: 0.1 W