JDM ASTAR 800 lumens Extremely Bright Error Free 921 912 PX Chipsets LED Bulbs For Backup Reverse Lights, Xenon White ONLY used for backup reverse lights. (Set of 2 bulbs) Each bulb include 15 Piece high quality PX LED chipets. Buy with confidence, We offer "ONE YEAR" warranty on item(s) that confirm to be manufacturer defect. Color: 6000K Xenon White. .Size: 1.70" long and 0.50" in diameter.It is perfect for customers who are looking for a extremely bright output. Lighting output: about 800 lumens for each bulb. Voltage DC 9V-30V. Fits 912 921 906 904 902 W16W etc. Error free design ,built-in load resistors to work for cars without on board computer error on dashboard. NOTE: Error free capability may not be compatible to the newest European vehicle Our bulbs use high lumens and only the best quality and authentic PX chips, equipped with constant-current driving IC which is much brighter and has a longer life span than most cheap, fake PX bulbs without driving IC on the market. The Amazon filter system may not be 100% accurate or up to date. The bulb size may vary between the model or trim of your vehicle. Please check your vehicles owners manual or the original bulb to confirm the bulb size before placing an order. ( Please do not leave one star review if purchase the wrong size , simply contact us or amazon ,we glad to help . Thank you for your understanding.)