Aura Design has all the best models and brands of 4K TVs: Panasonic, Samsung and Sony. The term 4K is an image format that has a resolution equal to or greater than 4,096 pixels wide (a total of 8.8 megapixels). The image has 4 times more pixels (and 4 times sharper) than a 1,080-pixel television.
Ultra high definition (Ultra HD) is also referred to when it comes to displays that offer a resolution equal to or higher than 3,840 x 2,160 pixels. In 2012, the term was intended to replace the 4K term, but Sony decided to keep the 4K Ultra HD name, and other manufacturers have also used this designation.
Quad HD is a term that refers to a screen resolution higher than 1,080 pixels, but lower than 4K. It is called Quad HD because the screen offers 4 times the 720p resolution.
The term HDR stands for High Dynamic Range, which means that a television can display better contrasts and offer more intense realism in light or dark colours. Some 4K televisions offer HDR technology, but they are more expensive