Samsung HW-E450 Wireless AirTrack Sound Bar

3D Sound Plus 3D sound for your 3D viewing environment. Samsung's sound processing technology combines its latest advancements in sound, 3D depth, and vertical and horizontal surround to deliver a more realistic 3D experience.Bluetooth Connect to other Bluetooth devices.HDMI Audio Return Channel Eliminate the need to use two cable connections. Instead, all you need is one HDMI connection between your sound bar and TV. Audio will be sent between your TV and sound bar (from connected external devices) using the same HDMI cable.