Small size, huge sound. The NEO ear bud lets you feel your music while blocking out the world. Engineered to deliver the highest quality listening experience from your Apple iPod, iPhone, BlackBerry, or other mp3 player, cell phone or music device. Features: * Built-inmicrophone for use with iPhone or BlackBerry. *Braided cables provide durability and flexibilityfor long-term use. * Includes 3 different sizeddouble dome ear gels and 1 pair of memory foam cushions. * Carry case included. Specifications: Driver Diameter: 8mm Impedance: 19 ohm Frequency Response: 20-20KHz Sensitivity (S.P.L.): 97±3dB (at 1KHz) Input Plug Diameter: 3.5mm iPhone