Natural Surround Sound technologyULE Technology: Low radiation after ULE standardMU Metal shielding40 mm Drivers with PET membraneNdFeB Magnet:Over-ear designClosedCircumauralDynamicFrequency range: 10 / 25,000 HzImpedance: 32 OhmAcoustic pressure: 96 dBProtein leather ear padsDetachable cable3 m Cable with gold-plated 3.5 mm jackWeight with cable: 342 gWeight without cable: 278 gIncl. 6.3 mm adapter and neoprene case