4K Ultra HD Blu-ray disc provides the ultimate in audio/video quality with a stunning 4K picture and state-of-the-art audio. Pop in a 4K Ultra HD Blu-ray disc and prepare to be transported. Dolby vision high dynamic range optimizes the color and brightness scene-by-scene for an even more spectacular picture. This LG Ultra HD Blu-ray player supports multiple HDR formats, including premium dolby vision. Popular online video services such as Netflix and Youtube offer a wide range of premium 4K content, much of it unavailable from any other source. This Internet-ready LG device is capable of delivering an uncompromising 4K Ultra HD experience. The USB port here allows you to quickly, easily connect a digital storage device and play your digital movies, music and more. Just plug it in and use your remote control to navigate through your files.