I held off reviewing to see how these would do. I bought them in July of this year, and they have completely stopped working now. It was little-by-little, but after going for about 5-6 hours, they just don't even light up anymore, even on the sunniest of days.
They don't give off much light, so they didn't really serve the purpose of buying them. However, I only bought one strand, so maybe with several of them it might be different. But they are pretty, and they have multiple settings, from blinking fast down to solid. With a bigger budget than I had, I can see these being really pretty.
I think these are much more suited for an event rather than for long term usage. They do work at first, but for me, I kind of wasted $16.