Klipsch Wireless Sub-Woofer R-10SWI (HitTrax Component)   Features:
10" Front-Firing, Spun Copper IMG Woofer
2.4GHz Wireless Hi-Fi Pre-Paired Transmitter
All-Digital Amplifier
Low Pass Crossover and Phase Control
Strong, Flexible, Removable Grille
Duals as wired subwoofer with subwoofer cable (not included)