Commodity parts: the sound headphones line 1 root the sound iSoniTalk iPhone headphone line 1 root hard portable bag 1 to wipe clean cloth 1 piece of 3.5 mm / 6.35 mm adapter a plug 3.5 mm gold-plated stereo straight into moving coil wire length model category 1.3 m weight (do not contain battery) 260 g frequency response 20-20000 Hz maximum output pressure 115 dB.