Extend the length of your headphones so you can move freely while listening to your favorite song, podcast and more. With the Best Buy essentials BE-HCL309 12' Headphone Extension Kit & Adapters, add 12 ft. of length to your existing 3.5 mm audio cable and connect to most of your audio devices. We’ve also included 1/4" adapters, which convert either end of the extension cable into a 1/4" connection. Backed by Best Buy, a copper spiral shield improves audio quality and reduces signal loss, while nickel-plated brass connectors and flexible PVC prevent corrosion, granting lasting durability. Lengthen your audio cords and expand their connectivity options with high-quality accessories you can trust.