Extend the distance between your mobile phone and wireless headset with a Startech 4-Pole 3.5mm TRRS Headset Extension Cable. It's also ideal for adding connection distance between a headset and computer audio port. This audio extension cable features nickel connectors that help ensure a stable and firm connection, as well as a PVC coating that helps the cable withstand years of everyday wear and tear. It has a very long 6.6' range, and it requires no additional adapter or power source to carry the full signal the entire length of the cable. Each headphone extension cable also features machine-reinforced joints with molded PVC strain relief, which virtually eliminates awkward bends at sharp angles. It also has a 90 percent spiral wrapped connector that provides effective shielding against EMI and RFI interference.