1.WaterproofSmall enough to fit anywhere - 36pcs set. Waterproof design, suitable for brightening any water-filled container. Can be placed in aquariums, vases and other water containers to light up Indoor or outdoor Alternative to traditional candles, new and environmentally friendly2.Create a good atmosphereFlameless, submersible, waterproof, create a warm atmosphere, no smoke, wax or dirt to clean.3.Battery FeaturesEasy to Twist On/Off: It can be turned on or off by twisting the base of the device,4.Popular ApplicationAdd a decorative touch to your wedding centerpieces, party decorations, birthday vases, flower arrangements, fish tanks, ponds and swimming pools.5. [Safety] No smoke, no open flame, no heat, avoid the occurrence of flame ignition.