620W power capability provides louder sound with greater clarity, detail, and depth 5.1.2 channel puts you in the middle of the action through highly immersive surround sound Powerful wireless subwoofer delivers deep and rich bass Bluetooth wireless music streaming and Wi-Fi 5 offer multiple options for wireless connectivity Dolby Atmos-enabled up-firing speakers bounce back sound from your ceiling for ultimate immersion in movies, music, and games Ray Danz Technology with acoustic reflectors creates wide soundstage with pristine sound TCL Mobile App allows you to tune the system for optimal sound experience in your room Roku TV Ready for seamless compatibility and integration with Roku TV Required accessories HDMI or optical digital cable, depending on how you're connecting the sound bar to the TV