[. . . ] [. . . ] When out and about, a convenient cord take-up lets you adjust the headphone cable to the required length. Open, dynamic, supra-aural hi-fi stereo headphones Ideal both for home mini hi-fi systems and mobile audio sources such as CD, MiniDisc and MP3 players Clips to the belt: convenient cord-take up for adjusting the cable length when listening on the move Very comfortable to wear due to ultra-lightweight design Rugged outdoor design with extremely flexible headband 3 m highly conductive OFC copper cable Replaceable fabric-covered ear pads 2-year guarantee HD 437 High levels and powerful bass for modern, rhythm-driven music Specially designed damping perforation ensures rich, crisp bass response Lightweight diaphragm with "turbine" embossing for low bass Powerful neodymium magnets HD 457 With excellent stereo sound and warm bass ideal for soul, funk, grunge and percussion Manually inserted cellulose fleece ensures balanced sound image Ultra-lightweight diaphragm material and powerful neodymium magnets for wide dynamics Hi-fi Stereo Headphones Model EAN No. Price Design Sound image Frequency response Transducer principle Impedance Max. sound pressure level (1 kHz, 1 Vrms) THD Ear coupling Weight Connector Cable Packaging Packaging dimensions (H x B x T) Carton dimensions (H x B x T) Number of packagings in carton Languages Design HD 437 40 12418 05175 4 6 15104 05175 1 05175 black headphones, silver print high sound levels, crisp bass 21 ­ 18, 000 Hz dynamic 32 115 dB < 0. 5 % supra-aural fabric-covered ear pads approx. 130 g 3. 5 / 6. 3 mm (1/4") stereo jack plug 3 m OFC copper cable resealable blister packaging with eyelet 270 x 215 x 90 mm 305 x 450 x 485 mm 10 German, English, French, Italian, Spanish, Dutch HD 457 40 12418 05177 8 6 15104 05177 5 05177 silver headphones, black print warm bass, balanced sound image 25 ­ 21, 000 Hz dynamic 32 114 dB < 0. 5 % supra-aural fabric-covered ear pads approx. [. . . ] [. . . ]