EP0146B Features Superb sound quality High density magnet provides super clear sound Provides you with great listening experience General Specs Brand  SONGQU  Sound Stereo with super bass sound quality Earphone Type Wired headphone Impedance  16 ohms at 1kHz Frequency 10-23000Hz Sensitivity 108DB Driver Diameter 16 mm Connector 3.5 mm audio jack Cable Length 126 cm Compatibility MP3 player， MP4 player， personal CD player， PC， laptop