The 55R7G5 is a 55 inch 4K TV from Hisense, launched in the year 2021. It features a 10-bit IPS panel with Anti-glare/Matte finish. The maximum resolution it can display is 3840 x 2160 @ 60 Hz with a pixel density of 80 ppi.
Picture Quality
After screen size and resolution, the very next spec of a display that impacts picture quality is Color Gamut.
This TV doesn't provide a color gamut specification, so we have to take a guess.
Considering the TV features a big 55 inch screen, it won't come with a cheap panel, so here we can assume its equivalent sRGB coverage to be 90-100% or above. Undoubtedly The color quality on this TV should be Lifelike! It is capable of producing color accurate images by default.
What Color Gamut means ?
Color gamut spec of a TV is a measure of the range of colors that it can produce.
Meaning, this specification determines the ability of a TV to produce accurate colors. A TV with low gamut coverage will miss out on some colors (such as deep red), the result would be a "washed out" picture quality.
Different manufacturers use different measurement standards to specify color gamut. Viz — sRGB, NTSC 1953, DCI P3 etc.
But you don't need to worry about that, below is a chart that you can use to choose a TV with good color accuracy.
After color gamut, you should look at the static contrast specification as it impacts the picture quality the same way.
What is Static Contrast ?
There are 2 types of contrast specifications for a TV. Static and Dynamic. We are interested in static contrast ratio as dynamic doesn't matter much.
Static contrast tells the intensity of black levels. That is, a TV with static contrast ratio < 1000:1 will produce black images something like this:

Apart from this, such TVs are likely to suffer from backlight bleeds that will affect your experience — as shown below.

Also, static contrast ratio and resolution go hand in hand when it comes to details. To put it into perspective, a TV with low contrast ratio will show both dark gray and black as black, so lesser detail overall.
However, we couldn't find a static contrast ratio specification for this TV. So we have to make an assumption again based on the TV's other specifications. In general, IPS panels come with a static contrast ratio between 700:1 - 1500:1. As for a 4K TV, we can assume the ratio of Hisense 55R7G5 would be >= 1200:1.
HDR10, HLG (Hybrid Log Gamma) and Dolby Vision are also supported on this TV.
Coming to brightness, the peak luminance the TV can achieve is 250 nits. The backlight used on the panel is Direct LED.
Gaming Performance
If you are planning to use your TV just for content consumption, you can ignore these specs. But if you are also planning to use the TV for gaming or use it as a PC monitor, make sure to take a TV that features the lowest input lag and response time.
Unfortunately, Hisense did not specify the input lag on this unit. Now, as this is not a cheap TV, we can expect an input lag of less than 20ms.
Understanding Input lag and response time
This lag is the latency at which your key-presses/mouse movements changes the content of the screen. For casual Non-FPS games, input lag doesn't matter much.
But ideally, look for a TV that comes with an input lag and response time of < 20ms.
Ergonomics and Dimensions
Now, speaking of ergonomics — If you plan to wall mount the TV, you can make use of the VESA mount provided with this TV, which by the way has an interface size of 300 x 200 mm. The unit doesn't come with either Swivel, Tilt or Pivot support.
Vertically, the TV measures 55 inches and horizontally 48.54 inches. Speaking of thickness, it is 2.91 inches thick.
Overall the TV weighs 11.5 kilograms including stand. Without stand, it weighs 11.3 Kgs.
Hardware and Audio
Speaking of OS, the Hisense 55R7G5 runs Roku TV Operating System.
For display connectivity, Hisense has provided three HDMI 2.0 (ARC; CEC) ports and one AV Composite In (Video + L/R) port on this TV.
For connecting USB devices, you will have one USB 2.0 port. Other connectivity ports include — 1x Cable/Antenna In (F-type female) and 1x Ethernet RJ45.
For connecting to this TV wirelessly, the manufacturer has provided a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi and Wifi-Direct.
The Audio unit of this TV is powered by 2 x 8W built-in speakers.
As for power consumption, on average, it uses 192 Watts. On standby, it takes 0.5 Watts.
It supports a power outlet of 100 V - 120 V/50 Hz - 60 Hz.