More product information ideal for mp3 players and smartphones what39s in the box 1 pair of quothk 5628quot stereo earphones operating instructions technical details design colour pattern motif series colour black line hk 5628 connectivity connection connection 35 mm jack plug size amp weight cable length 1 20 m speaker diameter 15 mm electrospecific properties frequency range 20 hz 20 khz impedance 32 omega