I purchased these after buying a dozen of another product on amazon which never worked well but was cheap. The cheap ones would blink randomly until burned out daily. These I used to replace those and went with earhtech because of the warrantee. They work great, no problem at all. They last about 5 hours nightly (we live in florida) and get good light. I have them along my walk way and on the dock railing. I have had them a few weeks.