By far the best LED headlight bulb cyclops has ever offered. They have taken all that has been learned over the years and rolled that into the latest 10th gen bulbs. This bulb uses 4 cree XHP 50 emitters capable of more than 2500 lumens each. The brightest Cyclops H4 bulb.
All new metal construction for bases and collars.
Better thermal efficiency
Better beam pattern differential between high and low beams.