Philips Halogen WhiteVision Xenon Effect HB4 12 V P22d - one bulb 9006WHVB1 The new Philips WhiteVision halogen headlamp delivers an intense, white light with up to 4100 K color temperature, 20% whiter light for ultimate style, and 40% more light on the road for increased visibility and maximum safety. Better visibility on the road with 40% more white light Fully homologated, road-legal white light - WhiteVision is R37 certified A bright white light for ultimate effect Fitting/cap type: HB4