The 43UQ80006LB is a 43 inch 4K TV from LG, launched in the year 2022. It comes with a True 8-bit IPS panel.
The maximum resolution it can display is 3840 x 2160 @ 60 Hz with a pixel density of 103 ppi.
Picture Quality
Now, the next important feature of a display that will impact your viewing experience is its Color Gamut.
LG has not provided a color gamut specification for this TV. 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. By this, we can assume that the sRGB coverage (equivalent) on this TV to be 70% or above. For content consumption and gaming purposes, you may not need any better color accuracy than this anyway. So its good enough.
Understanding the Color Gamut Specification
Color gamut spec of a display indicates the range of colors that the TV can produce.
A panel with poor color reproduction will produce undersaturated colors that will spoil the immersion.
Different manufacturers use different units to specify color gamut. Viz — sRGB, NTSC, DCI P3 to name a few.
But don't worry, below is a chart that will help you choosing a TV with good color accuracy.
Now, next in the list of important specifications that will impact your experience is Static Contrast.
What is Static Contrast ratio ?
There are 2 types of contrast specifications for a TV. Static and Dynamic. We are interested in static contrast ratio. Dynamic doesn't matter much.
Static contrast specification tells the intensity of black levels. That is, a TV with static contrast ratio less than 1000:1 will produce black images something like this:

Note that, such TVs are likely be prone to backlight bleeds that will rob your experience — as shown below.

Also note, 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 produce less shades of colors, thus lesser detail overall.
LG did not list a static contrast specification for this TV. Once again we have to make an assumption. Most IPS panels come with a static contrast ratio between 700:1 - 1500:1. For a 4K TV, we can assume the ratio of LG 43UQ80006LB to be on the upper side, that is atleast 1200:1.
HDR10 Pro and HLG (Hybrid Log Gamma) are also supported on this TV.
Coming to brightness, it is capable of producing a maximum brightness of 250 nits, which is powered by Direct LED backlight.
Gaming Performance
Now if you are going to use a TV other than watching videos — like as a PC monitor or Gaming, you would want to get a TV with lowest input lag. For gaming, both input lag and response time impacts the performance.
Unfortunately, there is no specification for input lag on this TV. But as this is not a cheap TV, we can expect an input lag of less than 20ms.
What is Input lag ?
This lag is the amount of time at which device inputs changes the content of the screen. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.
For best of both worlds, get a TV that has an input lag and response time of < 20ms.
Ergonomics and Dimensions
Now, speaking of ergonomics — a VESA mount with interface size of 200 x 200 mm is provided for wall-mounting. The unit doesn't come with either Swivel, Tilt or Pivot support.
The vertical and horizontal measurements of this TV are 38 inches and 24.49 inches respectively. It is just 2.25 inches thick. Overall this TV weighs approximately 8.9 kilograms including its stand. Without stand, it weighs 8.8 kgs.
Hardware and Audio
The TV comes with a Quad Core CPU. There is no mention on the total RAM on the TV's official specsheet.
Speaking of OS, the LG 43UQ80006LB runs webOS 22 Operating System.
For display connectivity, there are three HDMI 2.0 ports on this TV.
To connect USB devices, it includes two USB 2.0 ports. Other connectivity ports include — 1x Satellite In (F-type female), 1x Antenna (RF) (female), 1x CI+ 2.0 and 1x Ethernet RJ45.
For wireless connectivity, the manufacturer has provided Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth 5.0 and DLNA.
The Audio unit of this TV is powered by 2 x 10W built-in speakers.
As for power usage, on average, it consumes around 54W. On standby, it takes 0.5 W.
For powering this unit, you'll need an 220 V - 240 V/50 Hz - 60 Hz outlet.