Steelseries Siberia v2. Device connectivity: Wired, Device interface: 2x 3.5 mm, Cable length: 3 m. Ear coupling: supraaural, Headphone frequency: 18 - 28000 Hz, Impedance: 40 Ом. Microphone frequency: 50 - 16000 Hz, Microphone sensitivity: - 38 dB. Volume control: Rotary