The halogen lamp lights up evenly and is indicated with a luminance of 320lm.
Attention:
Installation Notes it sure that the halogen lamps are not touched directly with fingers. The resulting oily film may shorten the life time and the luminosity of the lamps. Best not completely tear the protective bag and only rausholen the two socket pins, then hold the bulb by using the plastic wrap and put into the socket. So anything can happen and the lamp will have a long life.
I am pleased with these halogen lamps and would buy me again if necessary.