Finally (but scrap)

Finally there is "Hammer light" (Lumen 480 is likely to vote)
Ranging in size, which is barely larger than halogen.
Just buy it, for the time being even because only obtained and a
Life I can not evaluate.
Auchter the light color is neither too yellow or blue.
As halogen up.
Above all, I have the experience that other lamps often the light color
vary within a batch.
Here "NOT", all the same.

Nachtag: 25/12/2014

Now, after about 3Monaten (daily 3-4 Std.) = 400 hrs., Are already 2 of 3 defective.

Were replaced by the seller without hesitation (without retour send the defects)

The vielbeworbenen hours all LED lamps (here 50,000) will never be reached, as previously always an electronic defect occurs.

However, this should really be the LEDs become defective because I had 2 broken to examine. :-)
short housing aufgehämmert (since shed).
Big surprise, LED current is limited only by 2 resistors because not much can be defective. However, whether this is a good solution in the long run remains to be wise.
400 hours of 50,000 promised is far from the erhoften life.
The good old light bulb has a life of about 2000 hours. And the need to keep these lamps once while trying to reclaim up.

Defect revealed by weaker (about 50%) of the lamp
(Reason: the lamp consists of 2 power LED)

Addendum: 02/27/2015
Here I give now only the least number of stars. Since now all (even the replacements by the seller) have failed.
Life (across the board) under any review.
Too bad, the size and brightness (if new) actually ideal, but burning halogen lamps much longer