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refer to this link to answer your question https://image.roku.com/ww/docs/compare-chart-new-old-en-us.pdf
Sorry, there was a problem. Please try again later.When I researched the Roku, I learned that the Roku Ultra 4K is essentially the same as the Roku 4 but adds 4K viewing and includes JBL earphones to plug into the remote for private listening. I have had no issues with heat/warnings.
Sorry, there was a problem. Please try again later.This newest ROKU ULTRA 4k model 4661 has added a power(on/off)button to the remote so you can shut it off when not in use! BIG plus for me. It also allows you to sync your TV to it. Hope this helps you :)
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