They emit light just fine, all car bulbs after installation it is good to check if the headlights are properly adjusted! then you have the best result I put them on a bus and finally I see proper lighting, they could be cheaper

They do what they say. Easy replacement without caps, adapters, etc. from halogen to LED. In terms of intensity, they are slightly higher than halogens. Very nice LED color. Installed in Ford Fiesta mk8 projector headlights, you remove the old ones and attach these on top. The car does not have canbus, so I did not have any problems with errors, but the Philips bulbs flickered while with these I did not have any issues. I consider it a reliable product that offers what it claims.
If you want to change bulbs from halogen to LED for color of illumination and appearance, it is perfect.
If you want to turn night into day, you probably need to go for a larger range with the classic process of caps/adapters, because these are not suitable for that and will not give you that result.
As for durability, we will see.

They are not worth their money.
Phillips vision diamond is the same in lighting value as 12 euros.
They claim to have a lifespan of 30,000 hours, I don't know if they will last.

I removed the old halogen and installed this new one. 100% compatibility, as the dimensions are 1 to 1 with the corresponding halogen.
The light is cool white and looks like xenon.
I also installed the same company's fleas.