Gu53 mr16 halogen bulb decostar 51 titan osramdecostar 51 titan is suitable for professional usage due to its constant brightness the average lifespan of this cold light reflector bulb is twice as high as with many standard products brightness and colour impression remain constantly wonderful the complete average lifespan of 4 000 hours thanks to a special reflector coatingproduct advantages brilliant accent light consistent blue colour impression of the light exiting through the back of