Model no: sd1290b A) Functions: adopting high-tech light boosting technology, shilan holy light combines the loss reduction function and light boosting circuit into one unit. It can reduce the circuit wastage, and at the same time make good protection for the power switch, headlight switch and the main circuit. It independently boosts the light of the front headlight with stable brightness. Whether the vehicle has started or not, it can achieve a strong light boosting effect once the headlight is turned on. The light can be boosted by more than 200%. B) Motorcycle models: applied for the 12v three-phase power generating models with headlight electricity provided by storage batteries.