Sennheiser PC 360 G4ME. Device connectivity: Wired, Device interface: 3.5 mm, Cable length: 3 m. Acoustic system: open, Headphone frequency: 15 - 28000 Hz, Impedance: 50 Ом. Microphone frequency: 50 - 16000 Hz, Microphone sensitivity: -38 dB, Microphone input impedance: 2000 Ом. Weight: 300 g. Connector(s): 2x 3.5 mm