Razer Carcharias. Device connectivity: Wired, Device interface: 3.5 mm, Cable length: 3 m. Ear coupling: circumaural, Acoustic system: open, Headphone frequency: 20 - 20000 Hz. Microphone frequency: 50 - 16000 Hz, Microphone sensitivity: -37 dB, Microphone connectivity: 3.5 mm