A unique idea in wireless home entertainment speakers, the True X Speaker 1A Portable Surround Speaker from Yamaha combines the use and convenience of a rechargeable portable Bluetooth speaker with the ability to pair it with a compatible Yamaha sound bar for use as a rear-surround speaker. Compact in design at less than four cubic inches, with an IP67 certification, the True X 1A is designed to be taken with you wherever you want to stream Bluetooth audio, even outdoors. If you have a Yamaha True X Soundbar connected to your TV, you can easily pair the True X 1A with the touch of a button to create a full surround sound system.