Much about nothing ... These lights are not as bright and intense radiation as touted by far. (Use in total darkness without any light source in the forest, no moon) Also, the "first half hour extremely bright" a fairly short half an hour. After the effect levels off significantly, so the radius is limited to, at best, 5 cm. I had this product for photographic purposes requires that went wrong.
Conclusion - As a small party light perhaps quite nice, practical use is zero.
