The NuForce NE-770X features design principles similar to those of the highly acclaimed NE-700, but with a somewhat different personality, The NE-770X wide-range, non-metallic drivers have been configured to produce a natural, supremely musical sonic signature without sacrificing dynamic punch, soundstage dimension, holographic imaging, or wide-band frequency response, The NE-770X polycarbonate body is acoustically inert and comfortably lightweight, Driver Size: 8mm, Impedance: 16 Ohms, Frequency Response: 20 to 20kHz, Rated Power: 3mW, Max, Input Power: 5mW, Sensitivity: 102dB +- 3db, Plug: 3, 5mm, Length: 54 inches, Accessories :3 pairs of single flange ear-tips, one carrying pouch, Color: Ice, SKU: NFCE010