Easy To Use: Come with CR2032 batteries which have 48+ hours of light-time and can be replaced easily 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, Festival, Year or any other Celebrations at night. You be amazed by the amazing effect providing with an exquisite sensation for your home. in any time :Our waterproof tealights can be used without having to worry of flame, absolutely No fire hazards or burning risks, No hot and dirty wax to deal with. colour: transparent without lights Material: plastic Size: 3x2.5 cm Package Contents: 1 x candle light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.