... . Fit for protable players, CD player 4.various colors in ear headphones Model No.: BYZ-X56Parameter:Speaker size: φ 30mmFrequency range ... different colorsAbout UsBYZ as the leading earphones and headphones manufacturer in China, we have 3 factories, more than ... in mobile phone handsfree headset, MP3/MP4 headphones, universal USB charger etc., We own 2 brands "BYZ" and "Tonzhiyin" in ear headphones