The Klipsch Flexus Surr 100 is a dedicated wireless surround speaker pair for the Flexus soundbar ecosystem. Each speaker houses a 3.5-inch full-range woofer and passive radiator for tight, dynamic rear-channel effects. Setup is plug-and-play: connect to your Flexus Core soundbar and the Surr 100 pairs wirelessly in seconds, instantly upgrading your stereo soundbar into a true surround system. Sold as a pair.