Sennheiser HME 27 (2024) headset; wired (cable not included!); over ear; closed back; dynamic; frequency range headphones: 4 Hz - 21 kHz; impedance: 64 ohms; sound pressure level: 102 dB SPL @1kHz, 1mW; integrated ActiveGuard Limiter (switchable: off, 95 dB, 110 dB); microphone (BKE 10-4): condenser (48V phantom power needed), chardioid, 40 Hz - 20 kHz; weight (without cable): 240g