You’re in luck! When you wear this LED Shamrock Beaded Necklace. To activate your LED Shamrock Beaded Necklace, press the button to scroll through 3 light functions: Scrolling flash, all lights flashing, steady light. Pendant Dimensions (W x H): 2.5″ x 2.75″ Green Beads Length: 30″ LED Colors: Green Comes ready to use with non-replaceable batteries.