Transducer: 50mm Dynamic, Closed cavity Ear Coupling: Supra-aural Frequency Response: 10-30,000 Hz Impedance: 32Ω Sensitivity: 98dB (+/-3dB @1mW) Rated Power: 300mW Max Power: 1800 mW Plug Type: 3.5mm with 6.3mm (1/4ʺ) adaptor included Cable Type: Straight and coiled options