KCRIUS(TM) Pack of 12 - Blue - Submersible Waterproof Underwater Tea Light Sub Lights Battery Operated LED TeaLight 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