The 50HE5301 is a 50 inch 4K TV from Hitachi, launched in the year 2021. It comes with a 10-bit VA panel with Anti-glare/Matte finish. The max. resolution it can display is 3840 x 2160 @ 60 Hz with a pixel density of 89 ppi.
Picture Quality
After screen size and resolution, the next important feature of a display is its Color Reproduction, which is defined by its color gamut specification.
Hitachi did not provide a color gamut specification for this TV. So we have to take a guess.
As this TV features a big 50 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 accuracy on this TV will be Lifelike! Meaning it is capable of producing color accurate images AS IT IS intended.
Understanding the Color Gamut Specification
Color gamut spec of a display is the measurement of the range of colors that the TV can produce.
A panel with poor color reproduction will produce washed out colors that will not be pretty to look at.
It is specified in different units - sRGB,sRGB (standard RGB), NTSC 1953, DCI P3 etc. It is upto the manufacturer which one they choose.
But don't worry, here is a chart that you can use to choose a TV with good color accuracy.
After color gamut, the static contrast ratio of a TV holds almost equal role in picture quality.
What is Static Contrast ?
A TV with low static contrast ratio will not produce deep enough blacks and may bleed backlight as in the below image:

The static contrast ratio of above TV is rated 800:1. So make sure you get a TV with a static contrast of >= 1000:1. More is better.
Think of static contrast as another dimension to details — just like resolution. To put it into perspective, a TV with low contrast ratio will show both dark gray and black as black, thus lesser detail overall.
If given a choice, I will prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
This TV comes with a static contrast ratio of 8000:1., well enough to achieve deep blacks. The panel comes with local dimming backlight technology which is a plus.
HDR is also supported on this TV in form of HLG (Hybrid Log Gamma), HDR10 and Dolby Vision.
As for brightness, the peak luminance the TV can produce is 350 nits, powered by Direct LED backlight.
Gaming Performance
If you are going to use the TV other than watching videos — say as a PC monitor or Gaming, you would want to take a TV that features the lowest input lag. For gaming, both input lag and response time affects the performance.
Unfortunately, we cannot find the input lag specification for this unit. But since this is not a cheap TV, input lag on this TV could be 20ms or below.
What is Input Lag and Why it matters ?
This lag is the latency at which device inputs changes the content of your TV. For casual Non-FPS games, input lag doesn't matter much.
But ideally, look for a TV that features 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. It comes with Swivel feature, but there is no support for Tilt or Pivot.
The width of this TV is 44.49 inches while its height is 27.72 inches.
Coming to thickness, it is 3.23 inches thick.
In total it weighs 10.6 Kgs including its stand. Without stand, it weighs 8.8 KGs. So plan your space accordingly.
Hardware and Audio
The Hitachi 50HE5301 is powered by 4-Core CPU. However, we could'nt find any information about the available RAM on the TV's official specsheet.
For display connectivity, Hitachi has provided three HDMI 2.0 (CEC) ports and one AV Composite In (Video + L/R) port 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+ 1.4 and 1x Ethernet RJ45.
Regarding wireless connectivity, 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 10W built-in speakers.
In terms of power consumption, on average, it uses 50.4 watts. On standby, it takes 0.5 watts.
For powering this unit, you'll require an 100 V - 120 V/50 Hz - 60 Hz outlet.