The 43A6GX is a 43 inch 4K TV from Hisense, launched in the year 2021. It comes with a 10-bit IPS panel.
It can display a max resolution of 3840 x 2160 @ 60 Hz with a pixel density of 103 ppi.
Picture Quality
Now, the very next specification of a display that will impact your viewing experience is Color Gamut.
Hisense did not provide a color gamut rating for this TV. But don't worry, we have other means to guess that. As this TV comes with a 10bit IPS panel, we can safely assume its equivalent sRGB coverage to be 100% or above. The color quality on this TV will be Lifelike!
Understanding the Color Gamut Specification
Color gamut specification of a TV is the measurement of the range of colors that the TV can display.
In layman terms, this specification determines the ability of a display to produce accurate colors. A display 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 (standard RGB), NTSC, DCI P3 etc.
But you don't need to worry about that, here is a chart that will help you choosing a TV with good color accuracy.
Now, next in the list that will impact your experience is Static Contrast.
The importance of static contrast ratio
A TV with low static contrast ratio will not produce deep enough blacks and may bleed backlight as shown 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. More is better.
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 produce less shades of colors, thus lesser detail overall.
If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
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. For a 4K TV, we can imagine the ratio would be no less than 1200:1.
Dolby Vision, HDR10 and HLG (Hybrid Log Gamma) are also supported on this TV.
Coming to brightness, it can go as bright as 250 nits. The backlight of this TV is powered by Direct LED technology.
Gaming Performance
If you are planning to use your TV just for content consumption, you can safely ignore these specs. But if you are also planning to use the TV for playing games or use it as a PC monitor, you would want to get a TV with the lowest input lag and response time.
Sadly, there is no specification for input lag on this TV. Now, since this is not a cheap TV, input lag on this TV could be 20ms or below.
What is Input lag ?
This lag is the latency at which inputs changes the content of your display. 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 comes with an input lag and response time of less than 20ms.
Dimensions and Ergonomics
The TV measures 43 inches vertically and 37.91 inches horizontally.
It is 2.91 inches thick. It weighs approximately 6.8 KGs, another 0.1 kgs including stand. So plan your space accordingly.
Now, coming to ergonomics — a VESA mount with interface size of 200 x 300 mm is provided for wall-mounting. Swivel, Tilt or Pivot features are not supported on this unit.
Hardware and Audio
The Operating System on this TV is XClass TV.
For display connectivity, there are three HDMI 2.0 (b; eARC; CEC) ports and one AV Composite In (Video + L/R) port on this TV.
To connect USB devices, it includes one USB 2.0 port. Other connectivity ports include — 1x Cable/Antenna In (F-type) and 1x Ethernet RJ45.
Wireless connectivity options on this TV include Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct and Bluetooth.
Coming to audio, Hisense has provided 2 x 7W built-in speakers on the 43A6GX.
In terms of power consumption, the TV consumes 160W on average and 0.5W on standby.
For powering this unit, you'll need an 100 V - 120 V/50 Hz - 60 Hz outlet.