[5.1.2 Channel] True 5.1.2 channel, true atmos, Expand soundstage in both vertical & horizontal direction. Hisense soundbar creates immersive surround around you, even overhead. [True wireless rear speakers] Enjoy 3D sound with the two wireless rear surround speakers in the mix. The dual wireless rear speakers deliver audio from behind you for true physical depth of surround sound in a wall-mountable design. [Dolby Atmos] Dolby Atmos is a surround sound technology developed by Dolby Laboratories. It expands on existing surround sound systems by adding height channels, allowing sounds to be interpreted as three-dimensional objects with neither horizontal, nor vertical limitation. You can enjoy a cinematic experience in your living room. Individual sounds come from all directions, including overhead, to fill the room with astonishing clarity, richness, detail, and depth, just like in real life, Instead of just hearing the scene, you will feel you are the a part of it.