Very water resistance, extremely long run time (on lowest setting), charges when other solar products do not (i.e. in lower light, shade, cloudy days). Rugged, one-button simple. The only drawback at all is that the twin LED spots are very glare-y and hard to look at. You need to position the product out of your visual area and use the light it projects. Looking at the source is uncomfortable, much like the old high-intensity (e.g. Tensor) bulbs were.