These candles are really cute and easy to use.  The switch on the back has on, off and flicker.  I put all of them on flicker and since solar they get all the sun or light coming in and around 430 they turn on automatically.  They dont get hot either so I am comfortable leaving these on.  They look cute from the outside too and look more like a real candle.  I would recommend these over battery ones which go through the battery fast. Or the electric ones which always seem to get hot.