Stay away - the LED's are worth any money.

This expectation was unfortunately completely disappointed. Not only do the lamps of Begin significantly different colors of light (a rather greenish a really warm white) had, they are also with increasing illumination time getting darker. So dark that the reference 40W halogen acts against as sun against a torch. Obviously is that connected with the temperature - after a long break the LEDs are again as bright as the reference (but not bright). 3min later, the same modest image.
The only bright spot is the small size, but then also makes it irreparable.

Resumé: Stay away. This is great scrap.