Review on 🚗 Upgrade Your Car with HX-CQHY 921 Led Car Bulbs Canbus No Error T15 Led Bulbs W16W 906 Led 912 Bulbs - Bright 15-smd 3030 Chip T15 Led Car Bulbs for Backup Reverse Light (4PCS/pack) by Shane Yay

I installed these on the car by replacing the factory 921 bulbs in some of the factory accessory lights. I used to install LEDs from other brands for the same purpose, but these new bulbs were significantly brighter than even those that were brighter than incandescent but started to flicker or burn out, probably due to cracked solder. So they are really very bright for this type of lamp. Unfortunately, in less than 3 months, one of them flickers. Again, I suspect the solder joint broke due to vibration from the car. The design is clearly not strong enough for such use. However, when I wrote my scathing review of their failure, I found that the pack I bought contained four bulbs and I only used two. In my review I criticized the work of light bulbs. The seller promptly refunded my money and as a result I have revised my review based on my overall satisfaction. *These are the brightest 921 bulbs I have used to date, much brighter than incandescent and brighter than other LEDs. *Pack contains 4 bulbs. This is good value - enough to have a spare if one of them failed in my case * The seller backs their product with very good customer service.