1. The ray axis of this bulb can be either moved forth and back or up and down. Generally, the beam of most ordinary H/L bulbs can only be moved forth and back so the illuminated area only shifts shapes while without changing its distance. However, our product could have a perfect performance when its beam is moved up and down.

2. There are three skews on its head, which you can use to adjust the illuminated area. Dome of the reflector on the lamp head can also be removed when the H4 H/L bulb cannot be properly installed due to certain big lamps’ small reflectors’ withstanding.

3. Easy to install

4. Waterproof ability is greatly enhanced with two appended   waterproof covers

5. The beam can be moved more than 130,000 times and the materials can work under the highest temperature of 330 Celsius degree.