What is HDR10?
Currently, there are five different varieties of HDR: HDR10, HDR10+, HLG, Dolby Vision and Advanced HDR by Technicolor.
According to the CEA (Consumer Electronics Association), HDR10 must meet certain standards, including 4:2:0 colour sub-sampling, 10-bit bit depth and the BT.2020 colour space. It applies those specific standards to the picture displayed by the TV.
As a general rule, all 4K TVs currently on the market and going forward should feature HDR10. This means your TV will be compatible with the most widely available 4K Blu-ray discs, 4K players and 4K streaming content – and it should offer a far better picture than a 4K TV without any HDR.