【Waterproof Design】Our submersible candles are waterproof, so there's no risk of leaks when the lid is tightened. They're perfect for vase lights, pond lights, aquariums, fountains, fish tanks, hot tub accent lights, and more. 【Long-lasting and Durable】Our underwater LED lights are powered by 2 CR2032 batteries (included), lasting up to 70 hours. Batteries can be easily replaced according to the instructions on the bottom. If the mini LED candle no longer lights up underwater, try turning it on again and re-seal the batteries. 【High-Quality Materials】The mini LED lights are made of high-quality ABS material and a sealed silicone round ring. The bottom of the candle is equipped with a rotary switch, a waterproof ring, and a gasket. When using, remove the rotating bottom gasket, then twist and tighten it. The candle lights up when immersed in water and does not sink. 【Create a good atmosphere】Fireless, submersible, and waterproof. No need to remove smoke, wax, or dirt. The bright