Soyntec Netsound 260. Ear coupling: intraaural, Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 102 dB. Connectivity technology: Wired, Cable length: 1.2 m. Dimensions (WxDxH): 100 x 30 x 165 mm. Package dimensions (WxDxH): 110 x 30 x 170 mm, Package weight: 45 g. Maximum input power: 0.06 W