The MUHSMF1M 4-Pole 3.5mm headset extension cable (1m) features a 3.5mm (1/8 TRRS) audio connector on one end and a 3.5mm (1/8 TRRS) audio connector on the other, making it easy to extend the reach between your hands-free headset or headphones, and your iPhone, mobile phone or laptop computer. To ensure long-lasting performance, this high quality 3.5mm audio extension cable features molded PVC strain relief at each of the 1/8 TRRS connectors, which prevents the cable termination points from bending at sharp angles, in turn reducing the risk of cable damage. Molded strain relief prevents the cable from being bent at sharp angles at the TRRS connectors, to minimize the stress at the plug termination point. Provides greater flexibility by enabling you to move more freely, while working at your computer with VOIP applications (Skype, chat programs). Backed by StarTech lifetime warranty. Extend the reach between your hands-free headset and an iPhone or other mobile phone. Add connection distance between your headset and your laptop or desktop computer audio port.