Belkin F5X002 XM Antenna Headphones

Features: Eliminates excess wires by consolidating headphone and antenna cables. Built-in volume control that is easily accessible on the headphone cord. Improves XM reception over standard external antenna. Integrates headphones and antenna into 1 design. Fits comfortably with adjustable earphones. For use with Helix and inno. 1-year warranty.