Just simply return the candle to turn it on or éteindre.Tres aesthetically beautiful and a beautiful blue color, these lanterns and perfectly mimic s' y mistake the light of a candle without its drawbacks .Indeed good battery life, it does not burn, it does not flow that is simple, clean, convenient and very safe with enfants.J'ai started by trying the blue and I have come to also take the red and whites. In short, a good idea gift to offer or s' to offer and what promise beautiful decorations tables.Merci Philips.