CrystalVision MotoHeadlight bulb

With the blue coating and silver top design, CrystalVision is offering bright white headlight of 4300K to see and to be seen, for both city and country driving

UV-Quartz glass is stronger than hard glass and highly resistant to temperature extremes and vibrations, which eliminates the risk of explosion. Philips quartz-glass lamps (filament 2 650º C and glass 800º C) are able to withstand severe thermal shock. With the capability of increased pressure inside the lamp, UV-quartz glass is able to produce a more powerful light

Only a burning bulb made of quartz glass (filament 2650°c, glass 800°c) can resist thermal shocks : such as, if a drop of cold water touches the hot bulb, when you drive through water with a broken headlight unit.