Dacomex Multimedia Headset + Microphone. Device connectivity: Wired, Device interface: 3.5 mm, Cable length: 3 m. Headphone frequency: 20 - 20000 Hz, Impedance: 60 Ом. Weight: 0.32 kg. Certification: RoHS, CE. Connector(s): 2x 3.5mm, Volume control: Rotary