Halogen light bulb Halo Spot 48 43x35mm halogen spot AR48, GY4, 8° beam angle. Putting things in a better light: Thanks to their good steering properties and their enormous light intensity, these Halo Spots are real professionals when it comes to putting rooms and objects in the spotlight. The faceted reflector enables the most even light distribution possible. With all lamps, you don't have to worry about heat build-up behind suspended ceilings: the aluminum reflector radiates most of the heat forwards.Energy efficiency class: CWeighted consumption (kWh/1000h): 22Mercury content (mg): 0Switching cycles: 50000Ignition time/start time (s): 0.0Color rendering index (Ra): 100Luminous flux maintenance: 0.75Power factor: 1Service life (h): 1000