Elecom Xcalgo Overhead Type. Ear coupling: supraaural, Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 101 dB. Connectivity technology: Wired, Cable length: 0.8 m. Package dimensions (WxDxH): 170 x 90 x 200 mm, Package weight: 0.33 kg. Maximum input power: 0.05 W