To activate your Fleur De Lis LED Charm on Mardi Gras Beads Necklace, press the button on the back of the charm. Choose from a flashing of all LEDs, a slow transition through every color, a still glowing light or blinking jade or orange. Dimensions: Height: 4.25 in. Width: 3.0 in. Necklace: 36 in. LED Colors: 1 Yellow, 1 Orange, 1 Jade. Fleur De Lis LED Charm on Mardi Gras Beads include 3 replaceable AG3 Batteries.