First the positive. She has a great, very bright and yet warm light for their 7 watts of power shots. As can no bulb and no mercury lamp compete. But the materials used and processing seem to be a disaster, at least in my pear.
The plastic starts after less than an hour to smell very badly for carbonizes. In addition, the lamp on the bottom is hot. Attention! Risk of burns to the fingers! The plastic used on the bottom seems to be inferior. Made in China shit up. In addition, the contact had already unpacked several flaws. As if the coating is scratched. Here I do not know if that affects the function of the bulb has.
These negative experiences I have not had in a 3 Watt LED desk lamp with blue LED rows. This always remains cool and does not stink.
Unfortunately I am sensitive to react to smells, I can not use this bulb and recommend no further to persons whose nose also (over) sensitive.
The 8 Euro is this bulb not worth for me. The LED is definitely the future, but the problems with the materials used and the heat generated by the electronics must Osram get in the years to come to grips with. Until then, I'll stick with only 3 stars.