Sennheiser PX 100-II On Ear Miniheadphone (Black)
Technical DetailsFrequency Response15-27,000 HzTransducer PrincipleOpen-AireTHD< 0.1% Max. SPL114 dB(1 kHz, 1V)Ear CuplingErgonomic Ear-Canal PhonesConnection Cable Length  3.9 ft (1.2 m)Nominal Impedance32Weight74gConnector1/8 in (3.5 mm) plugNoise CompensationUp to 20 dB (90%)General DescriptionThe new PX 100-II features the same massive,Open-Aire soundthat made them a hit for portable music players and netbooks. Available in black or white, some key improvements include a thicker,sturdier headbandand a newsingle-sided cabledesign that stays tangle-free in the supplied soft carrying pouch.The steel-reinforced headband can be folded into the compact package thesize of a pair of eyeglasses, making them the ultimate portable solution for the discerning ear.FeaturesAdvanced Duofol™ transducer system pumps out rich, lifelike audioOpen on-ear design delivers the most natural sound reproductionRe-engineered, durable single-sided cable eliminates tanglesSteel-reinforced headband delivers exceptional durabilityFold n' flip: the headphone collapses into a compact size when not in useConvenient carrying pouch includedOptimized for portable audio – including MP3 players, iPod, iPhone, netbooks and other electronics with a headphone plug2-year warrantyCX 880 Ergonomic Premium Earbuds with Volume ControlIE6 Dynamic In-Ear HeadphonesMX 680 Sports Earbud Headphones with Volume Control PX 200 IIHD 218HD 218 iPX 100 II iPX 200 II iFrequency10-21,000 Hz19-21,000 Hz19-21,000 Hz15-27,000 Hz10-21,000 HzTHD<0.1%< 0.5%< 0.5%< 0.1%< 0.1%Cable Length3.9 ft4.5 ft  4.5ft3.9 ft3.9 ftWeight88g226g289g85g95gConnector3.5 mm3.5 mm3.5 mm3.5 mm3.5 mmSound Pressure Level115 dB108 dB108 dB114 dB115 dBWarranty2 yrs2 yrs2 yrs2 yrs2 yrsVolume Control w/ MircrophoneNoNoYesYesYes