The thing was intended as a small funny Mitbestell gift, but it was unfortunately broken on. The package was not damaged and well the employee had at Amazon it once against held the light, then he could notice that the thing is broken. Even with a 500W spotlight moves as nothing. There is no on / off switch ... It is running or not. There is no guidance ... Ok you also need probably not. Well and for a few euros you stretch to no return. Conclusion: Never again this dealer Unexamined such scrap sent! For me, only an expensive dust collector !!!