Yeah, What Wilfor said...
The bulb draws 60/55 watts just like the stock bulb does...what the aftermarket bulb does (by a little filament tinkering) is get light output equal to a 110/100 watt bulb out of that 60/55 watts. These lights also DON"T put out more heat than the stock but may actually run cooler as they utilize the wattage to create light more efficiently.
These are marked " for off road use only" as is almost every single aftermarket light bulb out there because they can't legally sell them as OEM replacement because the engineers designed the bulb a little differently than a legal OEM bulb.(which how they get more light output from it)..which might cause you trouble If you have to do vehicle inspections in your state. Other than that..they don't blind other drivers in any way shape or form..they just put more visible light spread out on the road and a little farther down the road
Have had my anti-vibration Xtreme white plus H4 bulb in for almost a year now..still loving it
And yeah..Anti-Vibration is specifically designed for motorcycles because they vibrate like a mofo which could and probably will shorten the lifespan of a regular (car) bulb