Chromecast built-in. Use your smartphone to stream music from any Chromecast-enabled audio app, like Spotify, Pandora, iHeartRadio and more. Bluetooth music streaming. Makes it easy to enjoy tracks stored on a compatible Bluetooth-enabled device (not included). Dolby Atmos technology. Experience multi-dimensional sound above and all around you the way it was meant to be heard Multi-channel sound bar. Upward-firing speakers + multiple discrete speakers deliver a powerful dome of sound and crystal clear dialog. Take your home audio to a new height. Two rear surround speakers included. Expand your audio experience to full, immersive surround sound. Use voice to control the soundbar. This VIZIO Soundbar is the perfect smart-home companion, offering voice-control support from Google Assistant enabled devices. 2 upward-firing speakers. Moves sound around you, even overhead, bringing your entertainment to life. Wi-Fi streaming. Experience higher quality audio streaming over your home's Wi-Fi network, without interruptions from phone calls or texts compared to Bluetooth. 6" wireless subwoofer. Experience room-shaking bass you can feel. VIZIO SmartCast mobile App. Download this free app to a compatible smartphone or tablet to control and stream to the Home Theater Sound System. Multi-room streaming. Connect multiple VIZIO SmartCast audio devices together for seamless listening throughout your home.