This Sony AIR-SA5R Wireless Compact Speaker can be paired with compatible S-AIR™ Wireless transmitters to stream your music to another room in your home. Compatible with all S-AIR™ enabled Sony A/V receivers & home theater systems, it's easy to enjoy music playing on your system in another room of the house. Setting up this compact, socket Speaker couldn’t be easier. Just plug one into an electrical socket and that’s it. Each Sony AIR-SA5R Wireless Compact Speaker uses the electrical socket itself as a mount.