H4 is the brightest.
Because H4 is a light bulb near and far, H7 is a low-light bulb. Xenon lamps are divided into eight types according to the lamp form: high beam with lens, low light with lens, h1 (high beam lamp), h3 and h11 (fog lamp), h4 (near and far light bulb), h7 (low light bulb), 9005 and 9006.
Car headlights, that is, car headlights, are lighting fixtures that identify the front horizon when driving at night and are symmetrically installed on both sides of the front end of the vehicle. LED is a kind of electroluminescent device, the use of solid semiconductor chip as a light-emitting material, through the carrier composite caused by photon emission and direct light, LED headlamp is the use of LED as a light source produced by the lighting appliance.