Submersible Bright Light for Wedding Arrangements, Center Pieces, Fish Tanks and much more. * Replaceable Batteries - There are 2 per light-#CR2032 (initial 2 batteries included) * Typically lasts 30-40 hours (your results may vary) * Approximately 1" tall and 1.25" wide * Available in 9 colors - White, Pink, Orange, Purple, Red, Green, Blue, Amber and Multi-color