Bring the luck to your party. Add the Blinky Green Shamrock Flashing Pins to your party supplies. This fun party favor is great to hand out to your staff or guests. Perfect for your next celebration for St. Patrick’s Day. Simply activate each piece by pressing the button on the back of the shamrock. Each inexpensive piece is designed to replicated the traditional St. Patrick’s Day shamrock and includes three different green lights. Batteries are included for a quick and convenient use.