The 43HAE4351 is a 43 inch Full HD TV from Hitachi. It was launched in 2021. It features a 10-bit IPS panel.
It can display a max resolution of 1920 x 1080 with a refresh rate of 60 Hz and pixel density of 51 ppi.
Picture Quality
Now, the very next specification of a display that defines picture quality is Color Gamut.
Hitachi has not provided a color gamut rating for this TV. So we have to take a guess.
Now, since the TV comes with a 10bit IPS panel, we can safely assume its equivalent sRGB coverage to be 100% or above. The color accuracy 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 display can display.
Put Simply, it determines the ability of a display to produce accurate colors. A panel 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 1953, DCI P3 Adobe RGB, rec.2020.
But you don't need to worry about that, here is a chart that you can use to choose a TV with good color accuracy.
Now, after color gamut, the static contrast of a TV also impacts its picture quality.
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 as dynamic doesn't matter much.
This specification tells the intensity of black levels. That is, a TV with static contrast ratio < 1000:1 may produce black images something like this:

Apart from this, such TVs may suffer from backlight bleeds that will impact 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, 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. FYI — IPS panels come with a static contrast ratio between 700:1 - 1500:1. Considering its a mid-range Full HD TV, we can imagine the ratio would be no less than 1200:1.
HDR is also supported on this TV in form of HLG (Hybrid Log Gamma), HDR and HDR10.
Coming to brightness, it is capable of producing a maximum brightness of 300 nits. The backlight used on the panel is Direct LED.
Gaming Performance
If you are planning to use your TV solely for content consumption, you can ignore these specs. But if you are also going to use the TV for playing games or use it as a PC monitor, you would want to take a TV with 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, Non-FPS and casual games should be playable.
Understanding Input lag and response time
This lag is the amount of time at which your device inputs changes the content of the TV. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.
For best of both worlds, look for a TV that has an input lag and response time of < 20ms.
Dimensions and Ergonomics
The TV measures 43 inches vertically and 38.31 inches horizontally.
Speaking of thickness, it is just 3.23 inches thick. It weighs around 5.44 kilograms, another 1.8 kgs if you include stand. So plan your space accordingly.
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 100 x 100 mm. There is no Swivel, Tilt or Pivot feature support on this TV.
Hardware and Audio
The Hitachi 43HAE4351 is powered by 4-Core CPU. There is no mention about the total available RAM on the TV's official specsheet.
Speaking of OS, the Hitachi 43HAE4351 runs Android TV Operating System.
For display connectivity, Hitachi has provided three HDMI 1.4 (ARC; CEC) ports, one D-sub (15-pin) port, one AV Composite In (Video + L/R) port and one AV Component In (YPbPr + L/R) (via D-Sub) port on this TV.
To connect USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x CI+ 1.4, 1x Satellite In (Main — F-type female), 1x Antenna (RF) (female) and 1x Ethernet RJ45.
Wireless connectivity options on the Hitachi 43HAE4351 include Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth and DLNA.
Speaking of speakers, it is packaged with 2 x 8W built-in speakers.
Speaking of power usage, on average, this TV consumes around 67.2W and on standby, it uses 0.5 W.
For powering this unit, you will require an 220 V - 240 V/50 Hz - 60 Hz outlet.