Great idea. Sticks to window fairly well. However, I cannot close my shutters completely when the candle is attached to window. Not as bright as an electric candle and on an overcast day the battery doesn’t charge fully....leading to a dull candle. The onoff switch is flimsy. I gave it 4 stars because I ordered 6 candles and one was a dud. They come in packs of two. The other 5 were fine. I didn’t contact customer service because by the time another one came, Christmas would be over.