Compatible for both standard and ck socket .The turn signal flashes "amber-off-amber-off," instead of "amber-white-amber-white," which makes it easier to see.( most switchback bulb on the market flash amber-white-amber-white )
The bulbs equipped with constant-current driving IC and Aluminum Circuit Board. Fast thermal diffusion ,heat-resistant, no digital and VHF radio signal interference.
The 50w 6ohm load resistor or flasher relay needed to prevent the hyper flash or the bulb does not blink.