Sennheiser IE 80. Ear coupling: intraaural, Wearing style: In-ear, Headphone frequency: 10 - 20000 Hz. Connectivity technology: Wired, Headphone connectivity: 3.5 mm, Cable length: 1.2 m. Weight: 5 g. Package dimensions (WxDxH): 135 x 59 x 177 mm, Package weight: 0.425 kg