Soyntec Netsound 455. Interface type: 3.5 mm, Cable length: 2 m. Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 110 dB, Impedance: 32 Ом. Microphone frequency: 30 - 16000 Hz, Microphone sensitivity: 58 dB. Weight: 116 g. Package dimensions (WxDxH): 120 x 70 x 230 mm, Package weight: 117 g