These lights are made of solid glass and look great out of the box. I replaced all of the batteries immediately assuming they may have a short shelf life. I laid this out in my yard for a few nights to get an idea how they looked and it was great. I put my paver patio around these lights (they outlined the perimeter) and from the first night I never had all 7 working together at the same time. I replaced 3 of the lights and by the time they arrived, some of the original 4 weren't working.
When they work they look great, but out of 11 lights, I've had zero work regularly. Just recently one that has never worked started and is the only one that is working at all. Really a poor product which is too bad because when they light up they do the job well.