The starting voltage is 13V+, and the flameout voltage is lower than 12.5V (if it is higher than this value, it be extended for a few minutes until the voltage drops before the light goes out). When the car engine is started, the voltage reaches 13V+, and the daytime running lights automatically light up. When the car is turned off, the voltage is lower than 12.5V (not suitable for cars with a voltage higher than 12.5V after the engine is turned off), and the daytime running lights automatically turn off after a delay of 15 seconds, which is convenient for lighting the owner to go home and realize the delayed light-off function! The total power of a pair of daytime running lights does not exceed 18W (the total power of most daytime running lights not exceed). Tips: After the battery is connected, it is normal for the daytime running lights to light up for about 15 seconds and then turn off (delay function)., Weight: 0.05732018812 Pounds, Manufacturer: Steowsey