The 43H4G is a 43 inch Full HD TV from Hisense, launched in the year 2021. It comes with a True 8-bit IPS panel with Anti-glare/Matte finish. It can display a maximum resolution of 1920 x 1080 @ 60 Hz with a pixel density of 51 ppi.
Picture Quality
Now, the next important feature 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. This unit comes with an IPS panel and these panels are known to produce great colors by default. So we can assume that the sRGB coverage (equivalent) on this TV to be 70% or above. For content viewing and gaming purposes, you may not need any better color accuracy than this anyway. So its good enough.
What Color Gamut means ?
Color gamut specification of a TV is a measure of the range of colors that the display can display.
Meaning, it determines the ability of a display to produce accurate colors. A TV with low color gamut coverage will miss out on some colors (such as deep red), so the image produced will look "washed out" in colors.
It is specified in different units - sRGB,sRGB (standard RGB), NTSC, DCI P3 etc. It is upto the manufacturer which one they choose.
But don't worry, below is a chart that you can use to choose a TV with good color accuracy.
Now, after color gamut, the static contrast ratio of a TV holds almost equal role in picture quality.
Understanding the static contrast ratio
A TV with low static contrast ratio will not produce deep enough blacks and may bleed backlight as in the images below:

The static contrast ratio of above TV is 800:1. So make sure you get a TV with a static contrast of >= 1000:1. Ofcourse, More the better.
Note that, 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.
If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
We couldn't find a static contrast ratio specification for this TV. Once again we have to make an assumption based on the TV's other specifications. FYI — IPS panels come with a static contrast ratio between 700:1 - 1500:1. For a mid-range Full HD TV, we can guess the ratio to be >= 1200:1.
As for brightness, the peak luminance the Hisense 43H4G can achieve is 250 nits. The backlight used on the panel is Direct LED.
Gaming Performance
If you are planning to use your TV only for content consumption, you can safely ignore these specs. But if you are also going 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.
Sadly, there is no specification for input lag on this TV. Now, IPS panels in general come with high input lags and response times. So, the input lag on this TV could be greater than 20ms. Though, there's no concern for playability of casual or Non-FPS games on it.
Understanding Input lag and response time
This lag is the amount of time at which key-presses/mouse movements changes the content of the TV. For casual Non-FPS games, input lag doesn't matter much.
Although for better experience, look for a TV that comes with an input lag and response time of < 20ms.
Ergonomics and Dimensions
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 200 x 200 mm. There is no Swivel, Tilt or Pivot feature support on this TV.
Vertically, the TV measures 43 inches and horizontally 37.6 inches.
It is 3.4 inches thick. In total this TV weighs around 6.49 kgs (including stand). Without stand, it weighs 6.4 Kilograms.
Hardware and Audio
Speaking of OS, the Hisense 43H4G runs Roku TV Operating System.
For display connectivity, Hisense has provided one AV Composite In (Video + L/R) port and three HDMI (ARC; CEC) ports on this TV.
To connect USB devices, it includes one USB 2.0 port. Other connectivity ports include one Cable/Antenna In (F-type female) port.
For connecting to this TV wirelessly, you will have — Wi-Fi (5Ghz + 2.5Ghz) and Wifi-Direct.
For audio, it is packaged with 2 x 7W built-in speakers.
Speaking of power usage, on average, this TV consumes about 120 watts. On standby, it takes 0.5 watts.
For powering this unit, you'll need an 100 V - 120 V/50 Hz - 60 Hz outlet.