Slim and lightweight, philips citiscape headphones deliver pure sound for phone calls and music enjoyment on the go. for extra comfort and style, the citiscape strada headband is encased in a tightly woven fabric sleeve. powerful 32 mm drivers deliver clear, detailed and natural sound. you can hear every single note and nuance all the time and everywhere. philips branding tight fabric cover headband made of extra-light material open acoustic onear design for natural sound easily switch between music playback and phone calls cable connection: two parallel connectors, balanced cable length: 1.2 m connector: 3.5 mm stereo color: black acoustic system: open diaphragm: mylar dome frequency response: 19 21,500 hz impedance: 32 ohm magnet type: neodymium maximum input power: 32 mw sensitivity: 104 db speaker diameter: 32 mm type: dynamic voice coil: ccaw