About this item: 
ADVANCED ULTRA-SLIM SOUNDBAR & WIRELESS SUB - The Signa S4 with an upgraded 7-driver array and a dedicated full-range center channel delivers True 3D Surround Sound (Dolby Atmos 3.1.2 certified) and the 5.9" sub gives you a WIDE SOUND STAGE AND DEEP BASS.Waterproof : No 
UP-FIRING SPEAKERS FOR HEIGHT ELEVATION - In addition to L/R Tweeters (0.98"), (2) Racetrack Mid Drivers (4.7" x 1.57") and a 0.98" Center, the left/right elevation speakers (2.59") utilize Atmos' height channels for an immersive 3D sound over your head 
POLK’S EXCLUSIVE VOICE ADJUST TECHNOLOGY, along with S4's center channel lets you customize voice levels, so you hear crystal clear dialogues without missing a word. For maximum impact, control the sub and the sound bar's bass using Bass Adjust Technology 
EXCELLENT SOUND AND VALUE - At par with any mid- to high-range sound bars available in the market. At 2.36" tall, the Signa S4 fits most spaces - easily wall-mount it or place in front of your TV. It won’t block your TV’s bottom edge or IR remote sensor 
1-CABLE SETUP, WORKS WITH ANY TV INCLUDING THE LATEST 8K ULTRA-HD TVs - Get this system up and running in less than 5 minutes—all you have to do is unbox, connect and you are ready to listen. A great addition to your home theater! 
WIRELESSLY STREAM MUSIC from your favorite streaming apps like Pandora, Spotify, TuneIn, and others directly from your smartphone, tablet, or other compatible devices via built-in Bluetooth technology 
NUMEROUS CONNECTION POSSIBILITIES - Plug in any audio source via the provided inputs - (1) optical, (1) analog 3.5mm, or Bluetooth, and USB-A (for firmware updates). Enjoy uncompromised audio experience over the eight channels via the HDMI (eARC) output