Connectivity Technology: WirednInnovative holding system (Twist-to-Fit system) ensures best possible fit, High passive attenuation of ambient noise.nImpedance: 16 Ω, Frequency Response: 20 - 20000 Hz, Sound Pressure Level (SPL): 110 dB, THD (total harmonic distortion): u0026lt;0.2%, Cable Length: 1.2 m, Transducer Principle: Dynamic, Weight Approx: 5 gnPowerful, bass driven stereo soundnOptimized for MP3, iPod, iPhone, CD players and portable gaming systems Symmetrical CablenNew improved package CX 200 II Streetn