Light Up Shamrock Tall Top Hats each have 12 evenly spaced shamrocks throughout the green and silver/white strips. Upon activation the shamrocks blink and strobe bright green using the embedded LED lights. NOTE: Light Up Shamrock Tall Top Hats are sold by the Dozen. When you order 1 piece, you are ordering a set of 12 Light Up Shamrock Tall Top Hats. Therefore, when you order 9 pieces, you will receive 108 Light Up Shamrock Tall Top Hats. Batteries are pre-installed and replaceable.