Altec Lansing MZX736. Ear coupling: intraaural, Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 107 dB. Connectivity technology: Wired, Headphone connectivity: 3.5 mm, Cable length: 1.2 m. Package dimensions (WxDxH): 203 x 84 x 41 mm, Package weight: 180 g