Superlux HMD-660X, Headset, Dynamic, Circumaural, Closed, SPL: 96 dB, Impedance: 150 Ω, Frequency range: 10 - 30,000 Hz, Input power: 100 mW, Microphone: Dynamic, Frequency range: 150 - 10000 Hz, SPL: 136 dB, Impedance: 250 Ω, 3 m Spiral cable with 3.5 mm stereo mini jack for headphones and 6.3 mm screwable adapter - XLR microphone connection, Weight (without cable): 250 g