Cad Nb1 Noise Isolating Studio Quality Earphones high Output 8.5mm Driver With Neodymium Magnet For Clear - Robust Audio frequency Response: 20hz 0 18khz excellent Noise Isolation Along With Superb Sound Quality 3 Sizes Of Earbuds For Precision Fit And Maximum Performance compatiblE With Ipod Iphone And Mp3 Players includes 1/8 INCH Stereo Mini Plug - 1/4 INCH Stereo Plug - Airline Adapter And Nylon Carrying Case