The Outdoor Element Roku TV is now available in the US. The device is optimized to tackle the elements, with an anti-glare screen and IP55 weather protection rating. The TV has a 4K display and supports HDR10. Plus, the built-in Roku platform enables you to watch cable and use streaming services.
https://www.notebookcheck.net/Outdoor-Element-Roku-TV-launches-with-4K-display-and-anti-glare-screen.621171.0.html
Outdoor needs greater brightness to sustain viewing ability too, not only ip rating and anti glare.