1-4 of 4 Answers
According to displayspecifications.com the 55" TV has 720 dimming zones
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Sorry, there was a problem. Please try again later.Don't know but it is not better than the 55r646 for brightness as it is supposed to be 2400 nits which is more than twice as much as my r646 and I can tell you it is not Thanks
Sorry, there was a problem. Please try again later.The number of zones varies and is typically proportionate to each size. You can visit www.tcl.com/us/en/products/home-theater/qm7-class/55-class-4k-qd-mini-led-qled-hdr-google-tv-55qm751g to see all currently published information and specifications for this TV. Hope this helps! Thank you, TCL Customer Support
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