DRIVER UNIT1.57 “, dome type (CCAW Voice coil)DSEE EXTREMEYesFREQUENCY RESPONSE4 Hz-40,000 HzFREQUENCY RESPONSE (BLUETOOTH® COMMUNICATION)20 Hz–20,000 Hz (44.1 kHz Sampling)/20 Hz–40,000 Hz (LDAC 96 kHz Sampling, 990 kbps)FREQUENCY RESPONSE (ACTIVE OPERATION)4 Hz-40,000 HzPASSIVE OPERATIONYesNFCYesCORD LENGTHHeadphone cable (approx. 3.94 ft, OFC strands, gold-plated stereo mini plug)