Samsung 2.1 Channel 120 Watt Sound Bar with Active Subwoofer Home Theater System, Bluetooth, Soundshare, Smart On, 6 DSP Settings, 3D Sound Plus, HDMI , USB Host, Black Finish 120-watt 2.1 Channel Surround Sound - is delivered with unique 3D audio depth (30 watts x 2 with 60 watt woofer) Bluetooth Wireless - Supports Bluetooth wireless streaming from connected mobile devices 3D Sound Plus - Complement the images you see on screen with the full sound of 3D Sound Plus. By analyzing the depth of the 3D image, 3D Sound Plus synchronizes the sound to match the motion and depth of the image. Now you can enjoy a fully immersive 3D experience 6 settings - deliver optimal sound quality according to the content of the video. Settings are Movie, Game, Drama, Music, News and Sports Smart Volume - which is an active audio monitoring system that prevents spikes in volume when TV channels or radio stations are changed. This not only protects the listeners ears but also the soundbars speakers, thereby ensuring extended usage of the device