HF 580 Hi-Fi Planar Headphone            Music Appreciation            Wired            Head-mounted                 Features:        • Large planar magnetic driver unit, high performance NdFeBmagnet, high sensitivity, wide frequency response and dynamic                 • High quality TUYU ultra-thin diaphragm and 0.005mm Al foil,the production without glue, sub-frequency up to 10Hz                 • Ultra-large planar diaphragm, even vibration & low distortion,powerful LF, full MF, transparent HF                 • Open back design& 65292;strong ambience feeling, transparent andnatural sound, reproducing every music detail                 • Soft headband and ear pad for comfortable wearing                 • Ergonomic design for wearing on various heads                                   Specification:        • Unit: planar magnetic full range unit                 • Unit Dimension: 76x97x12.4 mm                  • Unit Impedance: 32Ω±20%                 • Headphone Frequency Response: 15Hz-25KHz                  • Sensitivity: 90±3dB                 • Rated Power: 10Mw                 • Peak Power: 20mW                 • Connection Cable: Φ4mmx3m splitter cable                 • Connector: stereo Φ3.