I purchased 4 of these for my client. I am a landscape designer and I bought them in early July for a house that she bought and was renovating. We did not install them until two weeks ago, as the construction was winding down. UNFORTUNATELY, we discovered that 1.) You cannot change the lightbulb - they are built into the light - and the light is obnoxiously bright. 2.) The one set kept blinking - no matter that the electrician changed the switches -twice. They would not stop blinking. Since I was told I was outside the return window, I cannot return them. A costly mistake. 
I would HIGHLY recommend that you not purchase ANYTHING from Wayfair if you are doing a construction project and are not ready to do immediate installation.