... Use 3. Flameless, No smoke, No fire, No danger . 4. CE & Rohs approval. LED Grave Light /LED cemetery candle/LED memroy candle1 ... .5cm X H 12cm.2, Waterproof.3, Provide a resemble candle flame.4, Safe to use indoor & outdoor, Don't worry ... LR14(#C) Alkaline batteries. (Working time: 6 months Uninterrupted) .6. Flameless, No smoke, No fire, No danger .7.CE & Rohs approval