This is 100% genuine Philips OEM factory spec HID bulb, which is the same one that most HID equipped vehicles come with as standard from factory. Please note that this is just standard 4300K spec, which is plain white. If you need blue light or white effect, please search for higher kelvin such as 5000K or 6000K. Please note that all HID lights do discolor to become bluer and whiter over usage and loses its brightness at the same time. For this reason, we strongly recommend replacing both bulbs at the same time in order to get even lighting output and color. *** WARNING! This listing is offered at low/discounted price since it comes in industrial packaging just like shown on photo. There is nothing more or nothing less. If you need ones that come in retail box with COA (Certificate of Authenticity), please search for it on our listing. Although the price is about 1.5 – 2X higher than this listing, you will get fancy packaging box with COA sticker. We are trying to make it as clear as possible because some buyer(s) complained about not having COA sticker when it was never mentioned on this listing.