Sennheiser HD 400S wired headphones

Impedance: 18 Ω | Microphone in: Yes | Connectivity technology: Wired | Quantity: 1 | Microphone frequency response : 100 – 10000 Hz (-10 dB) | Headphone sensitivity: 120 dB | Recommended usage: Audiophile | Wearing style: Around-the-ear | Product type: Headset | Harmonic distortion (THD): 0.5% (1kHz/100dB) | Built-in remote control: Yes | Weight: 217 g | Warnings: Do not disassemble or modify the product yourself. | Headphone frequency: 18 - 20000 Hz | Transducer type: Dynamic, closed | Product colour: Black | 3.5 mm connector: Yes | Cable length: 1.4 m