We use this at night pacifier since the beginning. We also had once tried the night of NUK pacifiers (because our daughter the NUK rather liked) were, however, disappointed by the luminosity. The pacifier shone as good as even after one hour no more. Not so the MAM pacifiers: Even if I come into my daughter's room in the morning, the pacifier lights still, which is why you always good finds him in bed (and my daughter probably will).