1. This product optical axis while which around expands and contracts freely, but also can reciprocate, causes the height lamp lamplight far and near the effect to be more perfectThus avoided in the similar product certain products which expanded and contracted while the optical axis not reciprocating, but caused the height lamp the lamplight at the identical position, was only the lamplight shape different insufficiency.

2. The lamp holder has three screws, may act according to the different head lamp headlamp to adjust the lamplight, the lamp holder reflection cup peak round lid may disassemble, prevents because inside certain head lamp headlamp small reflection cup to withstand the h4 height lamp not to be able to install arrives

3. Installs simply convenient, in view of certain automobile head lamp headlamp behind position small, the whole H4 height lamp installs when extremely difficult, our company develops the H4 height lamp is detachable is two parts of installments, may dismantle the lamp holder loads first the head lamp headlamp, covers the water proof cover, then partially loads again the light bulb inside the lamp holder, causes the installment to be possible with ease to complete

4. The waterproof performance was prominent, two which installed guards against the hydrosphere to strengthen the product waterproof performance greatly

5. Because the h4 height lamp controller has had the polarity inversion function, makes the height lamp in the transformation adjustment not similar product to be easy to appear short loses the light phenomenon, but also enable it to have ultra stable also the transformation nimble characteristic, and the controller waterproof performance is fine, the installment facilitates extremely simply.

6. The fine product quality causes the H4 height lamp the expansion and contraction number of times to reach 130,000 above time, timber wood mass energy thermostable 330