Edit: broken after 10h // was: Simple but ok

For a price of about 5 euros you can not expect high quality, but in principle the lamp does what is described: colorful light dots circle of wall / ceiling. With an additional washer between (plastic) axis and the facets hemisphere, are also the periodic grinding noises off, now almost silent operation. Nice effect for a little party, with the additional washer without grinding noises at quieter music. 1 star deduction for the license to tinker.

* Edit *
After several sample companies, generously rounded up in total 10h, the lamp (light + motor) is only briefly and again - and again and again ... Broken, unusable. Less than one star can not.
Presumably a loose connection in the integrated power supply. The mistake I could probably fix in 0.5h itself, but a paid service is in such a cheap product is estimated at least 10 times more expensive than the product itself.
Had she persevered at least one night for the party today. Luckily I still have a 2nd (other) LED lamp, I hope this keeps an evening by ;-)

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