WIRELESS DOLBY ATMOS: Enjoy a surround sound experience with Dolby Atmos and skip the need for HDMI cables. TRUE 11.1.4ch SOUND: Enjoy enveloping sound with 11 channels, 1 subwoofer and 4 up firing channels. Q-SYMPHONY: Perfectly synchronized audio uses every speaker in compatible SAMSUNG TV and soundbars. SPACEFIT SOUND+: Get room filling sound designed specifically for your space. This soundbar analyzes the room and automatically calibrates the audio to create a true to life experience. UP FIRING REAR SPEAKERS INCLUDED: Fill the room with theater like sound with the included up firing rear speakers that project audio above and around you. Wireless communication technology: Bluetooth Power source type: Corded Electric Item weight: 50.3 pounds This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.