I chose them because I wanted a slightly whiter color than the regular ones and I couldn't find 4000k in LED. Their color is white while it has a slight blue tint. They do not fully satisfy me in terms of brightness. Compared to the old ones I had for 16 years (Philips Long Life), they are slightly lower in brightness, meaning the previous ones were a bit brighter in depth. Now how long they will last will show, just don't touch them while you install them because they will burn immediately. Conclusion: If you want them for the white light and don't care about the brightness, they are okay; otherwise, if you want strong light, go for LEDs which, of course, will have more blue tint since you can't find them in white. I don't want the light to be cold because you won't be able to see in fog. Also, they come with the W5W in the box which are nice.

(In the photo on the right is the Philips Crystal Vision and on the left is the old Philips Long Life.)

white and not blue! this means that on rainy nights you have normal visibility not like those that blur and you can't see anything! they are great bulbs and you upgrade your lights without excessive changes and complications with other options

The old bulb on the left, the new one on the right. Nice light and intensity

I decided to buy the whole series from H1 H7 and H11 to make my car have slightly cooler lights. As for the H11 fog lights, both of them burned out after 2 years. Other than that, they are Halogen with slightly cooler light. Nice, but not worth it.

I wanted a clean white light at 4300k and this achieves it 100%. As for the brightness, it's great, I didn't expect miracles from a halogen bulb. I chose them for both a large staircase and spotlights. It remains to be seen how durable they are.

Very good light in rainy and foggy conditions. With the correct adjustment, it perfectly complements the headlights, so there is no need to turn on the high beam.

I wanted white light and I got white light on my focus mk1. I chose them to match the H1 and H7 in the high and medium beam. The difference from the stock ones is tremendous. For years I used the same model, in H4 on my previous car and I was always satisfied with the color and durability.
The color is relaxing and clean. I recommend the crystal vision to anyone who wants white light and doesn't want to install xenon or LED.

For the time that I have them, I am very satisfied. I hope they will last for a long time. I have had them for about 4 months

Installation in fog lights. Very nice white color and their intensity much better than the factory ones