EC exclusively offers you ‘Smart Tek’ technology.The bulb internally monitors its operating temperature. When a certain temperature is reached, the bulb will automatically increase the flash rate to lower its internal temperature.Should the increased flash rate not reduce the temperature to a safe level, the bulb will decrease light output by 25% to further cool and protect itself.These bulbs DO NOT require you to replace the flasher. Save time, money, and get a brighter bulb!Features32 SMD LEDs per bulb (24 amber and 8 white).Our LED bulbs have been tested to not create noise in your audio system and are the correct size so no drilling out the housing for proper fitment. Sold in pairs.