What Hi Fi Sound & Vision Awards 2012 Best portable on-ears up to £50 Winner Panasonic RPHTX7 Retro high quality monitor headphones in Black combine a great looking retro design with high-end modern technology such as the neodymium magnet which has 8 times stronger magnet power than ordinary ferrite magnets allowing higher sensitivity & wide frequency response to be realised. Panasonic RPHTX7 are comfortable to wear for extended periods of time thanks to features such as the luxurious soft ear pads lightweight band the single sided cord & one side monitoring system. Drive Unit (diam. in mm): 40.0 Impedance (Ohm) / 1 k H: 40.0 Sensitivity (d B / m W): 99.0 Max Input (m W): 1000.0 Frequency Response: 7 Hz-22k Hz Cord Length: 1.2m Weight (g) without cord: 153.0 Mini Plug 3.5mm Plug Adaptor (diam. 6.3mm) Plug Type: Gold Magnet Type: Neodymiun