Key Features of Sennheiser HD 380 Pro Wired Headphones

• 500 mW of Max Power Input
• Circum-aural Headphones
• Over the Ear Headphone
• 110 dB/mW Headphone Sensitivity at 1 kHz
• Over the Head
• 8 Hz - 27000 Hz Headphone Frequency Response
• 54 ohm Headphone Impedance