MDR-XB450 Extra Bass Smartphone Headsets with Mic, 3.5mm mini plug to 1/4" inch headphone Sound: Closed-Back Design, Thick On-Ear Cushions, Neodymium dynamic drivers deliver precise sound Pair with your MP3 player, great for home, studio & with smartphones, In-line microphone for hands-free phone calling Collapsible Construction, Swivel Earcups, 1.2m/47.25" cable (both-sided) Driver Unit: Closed supra-aural, Dynamic 30 mm, dome type (CCAW Voice Coil),
Frequency Response: 12 -22,000 Hz
Impedance: 24 ohms at 1 kHz,
Sensitivity (db): 100 dB/mW,
Power Handling Capacity: 1000 mW
