The x-treme Vision lamps promise in advertising may not reflect too much. The light output is significantly better than with standard bulbs. This is true for brightness and also to reach. But no matter whether H7 or H4, so even with different vehicles, more than half to more than three quarters of a year are not there with these bulbs. On vehicles with light sensor activated also like shorter. Who is it worth it gets good and bright lights. However, there are cheaper and more durable alternatives such. As the "White Hammer". This should come from Osram are also lighter than the standard (though not as bright as the x-treme) and last longer. Price: 10-12. For me they are now two years in use, the same vehicle Philips barely got passed the half year.
