SAFETY : Unlike traditional wax candles which can leave black marks on walls and ceilings, flickering flameless candles operated by battery provide ambiance without smoke, dripping wax or the risk of causing a house fire. Battery-operated candles are much safer than traditional wax candles. They can be used around small, curious children and rambunctious pets without worrying about accidental fires or toxic odors. LONGEVITY : The LED candles shine brightly for up to 700 hours on just one set of batteries (2 x C batteries, not included). Enjoy long-lasting ambiance without the hassle of frequent battery replacements.