3.5mm 4 Pole Male to 3.5mm 4 Pole Male Smartphone / Turtle Beach&reg; Cable 3.5mm 4 Poles Male to 3.5mm 4 Poles Male Stereo Jack Plug Audio Cable Standard phone audio cable for iPhone, Blackberry, Samsung, HTC and similar/equivalent models Connects a mobile phone or portable music player to the Turtle Beach PX22 or Z22 in-line amplifier. Also compatible with XP7, Z7, Sierra and similar/equivalent models Length: Approx. 3.5 ft