The 55E76GQ is a 55 inch 4K TV from Hisense. It was launched in 2021. It comes with a 10-bit IPS panel. It can achieve a maximum resolution of 3840 x 2160 @ 60 Hz with a pixel density of 80 ppi.
Picture Quality
After screen size and resolution, the next important spec of a display that defines picture quality is its Color Gamut.
The Hisense 55E76GQ is rated with a DCI P3 color gamut coverage of 100%, which is equivalent to 136.36% sRGB. The color quality on this TV should be Lifelike!
What is Color gamut ?
Color gamut specification of a TV is the measurement of the range of colors that the TV can show.
A panel with poor color accuracy will produce washed out colors that will spoil your immersive experience.
Different manufacturers use different units to specify color gamut. Viz — sRGB, NTSC, DCI P3 etc.
As for this TV its color gamut is specified in DCI P3.
But you don't need to worry about that, here is a chart that will help you choosing a TV with good color accuracy.
After color gamut, next in the list that will impact your experience is Static Contrast.
What is Static Contrast ?
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.
This defines the intensity of black levels. That is, a TV with SC ratio < 1000:1 will produce black images something like this:

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

Like resolution, the static contrast ratio is also equally responsible for details. 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, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
This TV is rated with a static contrast ratio of 1200 : 1. — good enough for a TV in this range. The panel comes with local dimming feature which is a plus.
Dolby Vision, HDR10, HLG (Hybrid Log Gamma) and HDR10+ are also supported on this TV.
Coming to brightness, the peak brightness the Hisense 55E76GQ can produce is 300 nits. The backlight used on the panel is Direct LED.
Gaming Performance
If you are planning to use a TV other than watching videos — say as a PC monitor or Gaming, you would want to get a TV that features the lowest input lag. For gaming however, both the input lag and response time affects the performance.
The input lag on this TV is 20 ms and its minimum response time is N/A. It is acceptable for casual and non-FPS games but is not suitable for competitive or FPS games.
Understanding Input lag and response time
This lag is the amount of time at which 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.
Ergonomics and Dimensions
Now, 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 300 x 200 mm. However, there is no Swivel, Tilt or Pivot feature support on this TV.
The TV measures 55 inches vertically and 48.31 inches horizontally.
It is 3 inches thick.
Overall it weighs approximately 15.0 KGs including stand. Without stand, it weighs 14.7 KGs. So plan your space accordingly.
Hardware and Audio
The Hisense 55E76GQ is powered by 4-Core (MStar MSD6886) CPU. However, Hisense didn't provide any information about the available RAM on the TV's specsheet.
Speaking of OS, the Hisense 55E76GQ runs VIDAA U5.0 Operating System.
For display connectivity, Hisense 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 — 1x USB 2.0 and 1x USB 3.0. Other connectivity ports include — 1x Satellite In (F-type female), 1x Antenna (RF) (female), 1x CI+ 1.4 and 1x Ethernet RJ45.
For connecting to this TV wirelessly, you will have — a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct and Bluetooth.
For audio, it is packaged with 2 x 10W built-in speakers.
As for power usage, this TV consumes 113.28 watts on average and 0.5 watts on standby.
Both 110V and 220V outlets are supported on this unit.