A set of 2 Philips X-tremeVision H4 3700K 12V 55W halogen bulbs. It upgrades your headlight bulbs economically, at the same wattage as the manufacturer's. It lights 45 metres further than normal bulbs. Visibility up to 130 metres, which lets you see far more ahead on the road. Technology: Halogen Brightness: 1650lm Colour temperature: 3600K Base: P43t-38 Life up to 540 hours It does not affect the proper running of the motorcycle. Excellent quality Suited to motorcycles and cars.