The Sloan SOLIS EAF-275 is a good looking faucet, all by itself. Then add an automatic sensor for hands free operation and a solar panel to keep the batteries charged. Genius. The solar panel works with natural or artificial light. The small lever on the right hand side lets you set the water temperature. I had the pleasure of using one of the Sloan SOLIS solar faucets the other day and it works and looks great.