Installed these lights on our fenceline to serve as a kind of illuminated boundary at night. Lights function perfectly - they're not blindingly bright, but at night they are bright enough for our purposes. Selecting the function is a bit hit-or-miss, but it's easy enough cycling through them to get the effect you want.After a day of sitting in the sun we have found that these units stay lit easily until morning (on a "twinkling" setting which my wife adores). After a couple of days of overcast the run time may be reduced a bit but honestly they last a lot longer than I was expecting. An excellent value for the money. Would definitely recommend to anyone looking for a solar light string.UPDATE 11/2019 : Of the four strings we have outside (and that have been outside since the original review) two of them have stopped working and the remaining two are slowly dimming. Solar panels are a bit grungy but cleaning doesn't seem to make a difference. My assumption is that the rechargeable batteries are failing. Still, after more than a year of constant use I can't complain. I'm going to see if the batteries are replaceable (don't think they are) and go from there.
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