Turtle Beach Ear Force PX21. Device connectivity: Wired, Device interface: 2.5 mm + 3.5 mm, Cable length: 4.87 m. Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 120 dB, Magnet type: neodymium. Microphone frequency: 50 - 15000 Hz, Microphone connectivity: 2.5 mm. Weight: 0.233 kg. Depth: 88.9 mm (3.5 "), Depth: 88.9 mm, Height: 279.4 mm (11 ")