Introduction Of H7 Car Bulb
H7 is the model of the bulb. Models are H1, H4, H3, H7, etc. 1.H1 is a high beam bulb; 2.H3 is a fog light; 3.H4 is a light bulb with both far and near beams; 4.H7 is mostly a low beam bulb, but some are also used as a high beam, such as AUDIA6.
