10 Pack Blue Submersible Waterproof Underwater Battery LED Tea Light~Wedding Submersible Bright Light for Wedding Arrangements, Center Pieces, Fish Tanks and much more. Approximately 1" tall and 1.25" wide Replaceable Batteries  Powered by 2 CR2032 coin cell batteries (initial 2 batteries included) Quantity = 10 Submersible Tea Lights Typically lasts 30-40 hours (your results may vary)