Sennheisser CX 3.00 earphones offer detailed sound reproduction and enhanced bass. Four fit size adaptors XS, S ,M, L for individual choice and comfort.Features and Benefits. • Detailed sound and enhanced bass. • Ear canal optimum fit. • High attenuation of ambient noise. • Tangle free elliptical cableHeadphone Style = EarphoneFrequency Response = 17 - 21000 HzImpedance = 18OhmsSound Pressure Level = 118dBCable Connector = 3.5 mm Angled PlugCable Length = 1.2mConnector Adapter Included = YesWeight = 12gMaximum Frequency Response = 21000 HzMinimum Frequency Response = 17 Hz