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You can try the 50-inch one, the 42-inch one is too small, and the 50-inch one is recommended.
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Now they all pay attention to the ultra-clear effect of the large screen.
49 is about the same, my family's is 49, and it looks just right.
According to personal habits, you can buy 42-47 inches. Attached: Comparison table of the best viewing distance between flat-screen TV and CRT vintage TV: Viewing distance (m) 16:9 Flat-screen TV 4:3 CRT Fiber Burning Vision. >>>More
The reasonable viewing distance of various TVs is shown in the following table: >>>More
The width of 4 meters is OK, the distance is 3 meters, the sofa is not easy to place, and the TV wall cannot be used as a TV cabinet.
The coffee table in the middle of the TV and the sofa is putting a few decorations, and Taobao can also be customized.