Products Info:- Advanced driver and circuitry design for powerful deep bass and clear mids and highs. The first high definition sound isolation in-ear headphones. Providing a superior quality, full range listening experience in a state of the art. in ear design. Expertly built to complement any lifestyle while you are on the road, at work, or lounging with your favourite device. Model : ZE15 Impedance:- 32 Ωhms Frequency range:- 18-20000Hz SPECIFICATION:- Speaker size 15.4mm Sensitivity:- 118±3dB Cable length :- 120 Cm Jack :- 3.5mm