Strong light but limited usage duration. If they are easy to replace, get 2-3 pieces so you don't get caught by surprise.

I have had them for 3 years and I am satisfied with their performance. Neither warm nor white. With the medium setting I have enough lighting. The high beam is mainly used on dark country roads. The lights are always on automatic so they turn on and off whenever needed. During this period I have done almost 35 to 38 thousand kilometers. Another advantage is their price. They are 1/2 - 1/3 of other reputable brands. I intend to order a set to have as spares. Ten euros for this quality every 3-4 years is worth it. I did not find anything negative.

The bulbs have a temperature of 3250K, so they lean towards yellow, though they're not terrible of course. As far as I have managed to understand, in this specific H7 series from Mtech, the Super White are 3,450K, the Ultra are 4,700K, and so on. Generally, there is some confusion in this company's series, as they do not explicitly state the temperatures.
Beyond that, I don't understand the rave reviews. They just do their job. The product is clearly made in China and it says so on the box (for those who have hopes because of the Polish Mtech). Personally, mine burned out WITH A DIFFERENCE OF 2 DAYS(!!!) in 2 years, with literally MINIMAL use, as I drive very little at night. They probably didn't even have 50-60 hours. I was really surprised, it's like they make them with a timer nowadays.

The bulbs were recently installed, replacing older ones that had lost their efficiency. The difference in lighting was noticeable. I would say that now the lighting is sufficient and functional, although I do not have a direct comparison with other similar options in the category.

The color of the light is as "white" as it should be, without altering the character of the car. It is important to note that, with halogen bulbs, choosing a whiter light often affects lifespan and efficiency. In this case, however, the balance seems satisfactory.

In the photo, these particular bulbs are installed in the main headlights, while Osram Cool Blue Intense type W5W are used in the upper eyebrow.

The color is what I wanted, at 4000K. They replaced the Osram Night Breaker +130%, even though only one had burned out. There is no difference in intensity and color of the lighting compared to the Osram because I initially compared them. Very good for their price. I generously deducted only one star because it is a Polish company but the box says made in P.R.C. Also, although I bought them from the official reseller on Skroutz, the front of the box is different from what Skroutz advertises. If they last a year or two, I will buy them again because the Osram, although good, have become too expensive.

I have had them for just 4 days in my 2012 Octavia. They are clearly better than the standard factory ones and better than the Philips equivalents I had installed previously. I traveled from Evia to Ioannina via Katara. Very good performance at night in the wooded landscape of Katara (nice, strong, white light everywhere, at a very satisfactory distance, the high beams were not needed anywhere). Also very good performance on the national road and the Egnatia (although in some dark sections of these roads they didn't seem to perform as well). Good performance even at dusk, the light is clearly visible at a distance. They have not been tested in the rain, at night. I don't know how long they will last, which is why I cautiously give 4 stars. For a halogen bulb, however, it is good and the price is fair...

In short...
Good color performance (not exactly white but close enough), moderate brightness, and lifespan, at least in my case, 14 months.

They have good light, perfect in the city, just sufficient on open country roads, no noticeable difference from regular ones. They appear to be of good quality, I haven't had them for long enough to evaluate their durability.

I am quite satisfied with their performance. They have been installed in an e36. I didn't want to go for LED because I didn't want to be another annoying person who puts random bulbs and annoys people.

Very good performance for their price. It illuminates further than regular halogen bulbs. Better performance than the branded ones I have tried. I highly recommend them. As for durability, it remains to be seen as I have only had them for 2 days. The color does not turn yellow.

In my 2 years of use, one of the two bulbs burned out, the color they emit is not white and it turns slightly yellow. It illuminates satisfactorily well when it rains

It is wrong to judge completely because I am sure that each bulb differs from lantern to lantern or from car to car. In this case, I have an Opel Astra h and I am not satisfied with their light. It seems to be brighter but not as dense. The comparison is made with unknown bulbs of two euros since I have no opinion about the factory ones because I bought it used with other bulbs. Also, I have no opinion about their durability because I have had them for 10 days.

In a car with quite "difficult" headlights (Alfa Romeo 147 preFL), miracles don't happen no matter what you put in. However, they are noticeably brighter than regular ones, and I don't perceive any difference in visibility compared to premium ones like Racing Vision. Their color is like regular bulbs, slightly more yellow than the more expensive ones. I wouldn't spend extra money on bulbs with a lifespan of 400 hours since I need 2 for each headlight, so these ones have exactly the right price-performance ratio.

Very good for their price..
Not excessively bright lighting but much better than the factory ones!!
I would prefer them again!!
Durability over time will show, because I have only had them for a month..

I am absolutely satisfied with both the lighting and the duration. I would like to mention that the installation was done in September (2019). Yellow color, not white that resembles xenon or led! If the lamp has wear, this cloudiness on the surface, as is natural, the light shows refraction. Their actual intensity is seen in clean-transparent lamps.
update February 1, 2021 and it continues!!!!!!
update August 2, 2021 without any problems
update December 2021 all good!!!
update February 20, 2023 all good!!!!!!
update August 2, 2024 UNBELIEVABLE!!!!!!!!