Avantone Planar Red, Headphones, Featuring planar magnetic driver technology, Open design, Supra-aural, 21 Micron PET diaphragms, Size of the drivers: 70 x 95 mm, Frequency response: 30 - 30,000 Hz, Impedance: 32 Ohm, Max. power handling: 5W RMS, Sensitivity: 104 dB/mW, Total harmonic distortion (THD): <0.1% at 100 dB, Weight: 480 g, Colour: Red/Black, Includes a 1.5, 3.5 mm audio cable, 3.5 mm adapter plug to 6.35 mm jack, and a transport bag