The 55U6G is a 55 inch 4K TV from Hisense. It was launched in 2021. It comes with a True 10-bit VA 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 very next spec of a display that impacts picture quality is its Color Gamut.
Hisense did not provide a color gamut rating for this TV. But don't worry, we have other means to guess that.
Now, since the TV features a big 55 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 quality on this TV should be Lifelike! It is capable of producing accurate colors.
What Color Gamut means ?
Color gamut specification of a display is the measurement of the range of colors that it can produce.
Meaning, this specification indicates the ability of a display to produce accurate colors. A panel with low 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(most popular), NTSC 1953, DCI P3 to name a few. It is upto the manufacturer which one they choose.
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.
After color gamut, next in the list of important specifications is Static Contrast.
Understanding Static Contrast
The static contrast ratio of a TV corresponds to its Black levels. A TV with low static contrast ratio (<1000:1) will not produce deep blacks. Apart from this, such TVs are likely to suffer from backlight bleeds such as this:

Needless to say, this will rob your viewing experience, especially in a dark room.
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, so 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 is rated with a static contrast ratio of 8000:1., well enough to produce deep blacks. For the record, it also comes with local dimming backlight technology which is a plus.
Dolby Vision, HDR10, HDR10+ and HLG (Hybrid Log Gamma) are also supported on this TV, so that's a plus.
As for brightness, it can go as bright as 600 nits. The backlight of this TV is powered by Direct LED (Full-Array Local Dimming) technology. This amount of brightness is good enough even for a well-lit room!
Gaming Performance
Now if you are planning to use your TV other than using it as a TV — say as a PC monitor or Gaming, you would want to take a TV with lowest input lag. For gaming however, both input lag and response time impacts the performance.
Sadly, Hisense did not specify the input lag on this unit. But since this is not a cheap TV, we can expect an input lag of less than 20ms.
What is Input lag ?
This lag is the latency at which your key-presses/mouse movements changes the content of the screen. For casual Non-FPS games, input lag doesn't matter much.
For best of both worlds, get a TV that has an input lag and response time of < 20ms.
Ergonomics and Dimensions
Now, coming to ergonomics — a VESA mount with interface size of 400 x 400 mm is provided for wall-mounting. There is no Swivel, Tilt or Pivot feature support in this TV.
The TV measures 55 inches vertically and 48.31 inches horizontally.
In terms of thickness, it is just 3 inches thick. It weighs approximately 14.7 KGs, another 0.2 kgs including stand. So plan your space accordingly.
Hardware and Audio
The Operating System on this TV is Android 10.
For display connectivity, Hisense has provided four HDMI 2.0 (b; ARC; 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 Cable/Antenna In (F-type) 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.
Now, speaking of speakers, it is packaged with 2 x 10W speakers.
In terms of power consumption, on average, it consumes around 114 Watts and on standby, it uses 0.5 Watts.
It supports a power outlet of 100 V - 120 V/50 Hz - 60 Hz.