Submersible Water Lights - Color Changing LED Light with Clear Acrylic Gems Acrylic gems make for perfect vase fillers and are the ideal compliment to submersible lights as they beautifully reflect light and water. This package includes clear acrylic gems and a 1 inch color-changing submersible LED light so that you can quickly create beautiful floral arrangements and centerpieces. Simply add the clear acrylic gems to any transparent container, place the submersible light in the gems, covering slightly, then add water. Complete the look by adding flowers, floating candles or fish. The resulting display can be used for wedding, event and everyday decor. Light cycles through 7 rainbow colors. Submersible light measures 1" x 1.15" and operates on 2 x CR2032 batteries (included and replaceable)