Bose® Soundbar 700: slim three-channel sound bar fits neatly into your TV setup sturdy metal construction with sleek, tempered glass top panel built-in voice control with Amazon Alexa voice control of compatible music streaming services and smart home devices superior voice pickup from a custom-designed eight-microphone array light bar visually indicates when Alexa is listening, thinking, or speaking specially designed drivers deliver full, spacious sound PhaseGuide® technology simulates surround effects by reflecting sound around your room ADAPTiQ® automatic calibration system adjusts the sound based on your room's size and shape QuietPort™ technology enhances bass response and lowers distortion optional Bose Bass Module 700, Surround Speakers, and Surround Speakers 700 sold separately Bluetooth connectivity allows you to stream music and audio from any app on your smartphone or tablet Apple AirPlay 2 compatible with future firmware update