(Set of 2 Bulbs)16SMD 3030 high brightness chips per bulb, Working Voltage: 9v-24v Fits: 1157 BAY15D P21/5W 1016 1034 1157 1157A 2057 2057A 2357 2357A 2357NA 2397 3496 7528 etc. Easy installation, plug and play. Application: Light up Xenon White for parking lights or daytime running lights, Light up Amber for turn signal lights. 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). Advantage: More than 300% brighter than original halogen bulb, full Aluminum Housing with Projection lens for Maximum Light output and better heat distribution, built in Constant Current IC for Longer life span & Low Power Consumption. NOTICE: The 50w 6ohm load resistor or flasher relay might be needed to prevent the hyper flash, malfunction or trigger warning message on dashboard. Any other problem please feel free to contact us, we are always here to satisfy of you.