ICIDU Multimedia Headset With Microphone. Device connectivity: Wired, Device interface: 3.5 mm, Cable length: 1.8 m. Headphone frequency: 20 - 20000 Hz, Impedance: 32 Ом. Microphone frequency: 20 - 20000 Hz. Packaging height: 235 mm, Packaging length: 72 mm, Packaging width: 172 mm