Have not used them much and when I did one of the switches doesn't want to turn off, so they are either on at night or off.Several night just had to let them burn all night...(as don't want one on and the other off) but then suddenly I was able to turn the faulty one off, so now they are both off. Have had them a couple month so didn't have box or anything to return them.I've purchased multiple sets, use them for camping and in the yard. Best design, quality, and price hands down!!! Will buy more!I bought these as a replacement for an older version These actually look like they have a flame inside and will last all night following a sunny day. I've had several people inquire where I got them and told them AMAZON.These look like real tiki torches! Amazing! Recommend if you love the true look of A tiki torch!I bought them to replace a set Of solar lights and these exceeded My expectations. They provide more light and have a better flickering motion than the previous ones.These are the realistic fire torches I have ever seen. I plan on buying more!Love these lights!Very nice and relaxing