Sennheiser HD 25 - professional headphones, dynamic, closed

Warnings: Read the user manual before use. | Package contents: Adapter 6.35 mm x 1 | max SPL: 120 dB | Warnings: Do not disassemble or modify the product yourself. | Package contents: Headphones | Harmonic distortion (THD): 0,3 % | Impedance: 70 Ω | Cable length: 1.5 m | Product colour: Black | Cable colour: Black | Transducer type: Dynamic | Headphone frequency: 16 - 22000 Hz | 3.5 mm (1/8-inch) in: 1 | Connectivity technology: Wired | Ear coupling: Circumaural | Recommended usage: Studio | Acoustic system: Closed | Wearing style: Head-band | Product type: Headphones | Weight: 140 g