Someone who is familiar with similar products can easily install it. Before installation, you can watch a video on YouTube. It does not affect the functionality of the screen at all. The pen continues to work perfectly.

Easy to install (I put it on myself without any problems after watching a video first).
The touch function is not affected by finger or S Pen.
It also has a distance from the edges of the tablet and is not pressed by the case I have (Dux Ducis Domo).
The only issue is that fingerprints and lines from the pen are more visible, so it requires more regular cleaning with a cloth

It is an excellent product for screen protection and especially if you have previously applied such products to computer or smartphone screens, then it is certain that within 4-5 minutes at the latest you will have finished with its placement. It is true that it leaves a small gap of about a millimeter around the edges of the tablet (Galaxy Tab S6 Lite), but that is exactly as much as needed, so that if you use a case, it does not hit it and cause damage.
Literally flawless (in fact, mine even had a price sticker on it that was larger than the one I bought through Skroutz).

Mostly used with the pen as a notepad. No problem with the response (pen & touch).
Frames the screen correctly, leaving a small gap around the edges.
This helps because when the case "hugs" it, it doesn't squeeze or press it, preventing it from coming off.
For proper installation, using adhesive tapes-guides for cleaning and measuring, there is no issue, you just need to have put them on again.
Does not include a spatula and cloth.
The cleaning supplies could have been x2.

I have installed it on my 9-year-old daughter's tablet and both of us are still using it after almost 9 months.

Very high-quality product. Its installation is extremely simple. It takes a lot of effort to leave no empty space between the screen and the glass, and the reason is that it fits exactly on the surface. The only negative point I would mention is the "fingerprints" - if you allow me the expression - that the use of the S Pen leaves on it. However, it can be easily solved with a classic microfiber cloth from the supermarket (slightly damp). Don't let this discourage you from buying it.

Applied perfectly, struggled a bit to remove the bubbles, but eventually they disappeared with a "push" towards the corners and quick circular motions.

I don't notice any difference in the use/response speed of the screen with the tempered glass compared to the bare screen, the stylus works just fine, I write with it as before. It is also compatible with the Dux Ducis Domo Smart Flip Cover Black (Galaxy Tab S6 Lite 10.4): The tablet fits in the case without any issues.