Show your St. Patrick's Day holiday spirit with Blinky Big Shamrocks, Party Light Necklaces! LED Necklaces come with 9 flashing jumbo shamrocks charms to keep the party going all night long. To activate your Light Up Jumbo Shamrocks Party Necklace, remove the pull tab and press the button. Cycle through 3 LED functions: Flash, Blink, Pulsing Pattern. Charm Colors: 5 Dark Green, 4 Light Green. Complies with ASTM, CPSIA, Prop 65. 41" L x 2" W x 1.5" H