Update your motorcycle: The motorcycle bulbs have centralized full beams, allowing you to see deer clearly, avoid repair work and accidents, and take it easy through rural areas, deserted highways | Safe and Reliable: Focus design ensures higher on the passenger side to illuminate road signs and lower on the driver's side to prevent blinding other drivers. The wider and farther visibility increases response time, reducing the risk of accidents | 50000 Hours Lifespan: SEALIGHT H4 led motorcycle bulbs external driver separates the power supply and the bulb body, which helps dissipate the heat of the light beads, reduces light decay, and extends service life up to 5 years. Please note that the external driver is not a decoder | 10 Minute Installation: SEALIGHT H4 motorcycle bulb’s heat sink is only 0.72 inches, no tools or modification needed. True plug and play. Non-polarity socket, finish installation in minutes | 99% Vehicles Adaptability: SEALIGHT H4 motorcycle bulbs built-in intelligent CSP chips, compatible with 99% of vehicles’ system. But for some sensitive cars, may require an additional CAN bus decoder to be installed. To solve the issue, an additional CANbus Decoder is needed to make the bulb perform well.