Easy To Use: Come with CR2032 batteries which have 48+ hours of light-time and can be replaced via the tab at the bottom. Unscrew the back cover to replace batteries when needed. Kindly Note: Twist the back cover to active the lights, some may need harder to twist.Submersible & Waterproof:Made of high-quality plastic. With a sealing ring to prevent the battery and LED lamp from wet, which can be submerged into the water, suitable for mood lighting such as Vase,Pond,Aquarium,Fish Tank light,Pool.Widely Use :Suitable for decorating Wedding, Party, Birthday, , New Year or any other Celebrations at night. You will be amazed by the effect providing with an exquisite sensation for your home. in any time : waterproof tealights can be used without having to worry of , No fire hazards or burning risks, No hot and dirty wax to deal with.colour: transparent without lightsMaterial: plasticSize: 3x2.5 cmPackage Contents:1 x candle lightOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.