Easy to Use: Comes with CR2032 batteries that provide 48+ hours of illumination and can be replaced via the tab at the bottom. Unscrew the back cover to replace batteries when needed. Note: Twist the back cover to activate the lights; some units may require firm twisting. Submersible & Waterproof: Made of high-quality plastic with a sealing ring to protect the battery and LED from moisture. Can be submerged in water, suitable for use in vases, ponds, aquariums, fish tanks, and pools. Wide Application: Ideal for decorating weddings, parties, birthdays, New Year, and other nighttime celebrations. Creates a beautiful ambiance for home decoration. Safe Use: Waterproof tealights eliminate fire hazards and burning risks. No hot wax or mess to clean up. Color: Transparent when lights are off Material: Plastic Size: 3 x 2.5 cm Package Contents: 1 x LED candle light Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.