after a week on the road ... c is actually whiter than my 100w 4200K and less than my white LED night lights against by being often campaigns on road I regret the scope of lighting .... it nevertheless remains acceptable .. .but still c is the luminous flux 900 lm lm against 1,550 for a standard 3200k ... next time I think (for country roads with no markings and no lights on board ... SUPER BRIGHT 3200k OFFROAD but with a flux of 2600 lm .... it will be less beautiful ... but I think more effective ... to sum up ... we must make a choice between aesthetic and practical Now if you are rather OFF-ROAD city OSRAM COOL BLUE HYPER is for you ....