Case of 20 Bulbs, Osram 41870 ~ Nominal voltage 12 V Construction wattage 50 W Nominal wattage 50 W Dimensions & weight Contact spacing 5.3 mm Length 46.00 mm Overall length 46.00 mm Diameter 51.0 mm Outer bulb T9 Lifespan Nominal lamp life time 3000 h Rated lamp life time 3000 h Light technical data Luminous intensity 930 cd Beam angle 60 ° Rated color temperature 3000 K Rated color rendering index Ra 100 Rated starting time 0.0 s Rated warm-up time (60 %) 0 s Lumen main.fact.at end of nom.life time 0.80