12-pack Backto20s&reg; Waterproof Submersible LED Color Changing Tealight Candle Light for Wedding Candles Vase Fish Tank Decoration Cautions: Backto20s never authorize other resellers on Amazon.com. Authentic product comes with a certificate issued by Backto20s Transform your floral, event and catering designs into glowing masterpieces with the submersible lamp. Use the submersible lamps to illuminate flower arrangements, design props, table settings, serving trays, candle votives, ice sculptures and much more. The submersible lamp has an ON/OFF switch and replacebale batteries (2 CR2032 coin cell batteries) for endless hours of enjoyment. The submersible candles changes colors gradually from red to blue to green. To activate unit, please remove paper before use. Twist to the right to turn on, and twist back to the left to turn off. To replace batteries, remove back cover. Set of 12 pcs in sealed Blister package w/ user instruction. 1" High by 1 1/4" in Diameter