Tt eSPORTS Shock Spin HD. Device connectivity: Wired, Device interface: USB, Cable length: 3 m. Ear coupling: circumaural, Headphone frequency: 15 - 20000 Hz, Impedance: 32 Ом. Microphone frequency: 100 - 10000 Hz, Microphone sensitivity: -34 dB, Microphone input impedance: 2200 Ом