They are hopefully long :-)

For decades, we use this 30 ° / floodlight lamps (sometimes in 80, 100 or 120 W). Whichever way the well-known brands, we simply love her wonderfully balanced light, their incredible longevity (despite countless times of on / off) and also simply their appearance. Also we somehow get the impression that a 100 W lamp of this type efficiently radiates when 2 halogen lamps with 50 watts ... but that's probably subjectively ;-)

+ So beautifully nostalgic
+ First-class quality
+ Very durable
+ Excellent, not flickering light with optimal color spectrum
+ Good fit in socket, hence freely "floating" can only be used with version
+ Without pollutants, thus secured disposal even after the garbage ;-)

Tip regarding the longevity.:
Do not touch because of the fat content of the skin regardless of the vitreous lamp principle with bare hands to, but take a clean piece of paper or cloth. This is especially true for lights that are very hot.