Blinky LED Christmas Tree Pin is a holly jolly flashing stocking stuffer perfect for the Holidays. Watch this Light Up Christmas Tree Blinking Pin light up the holiday festivities, be it at a Christmas festival, the office holiday party, and more. To activate Flashy Lighted Christmas Tree Pin, remove battery protection and press button for 1 function: Flashing. Item attaches with safety pin. Blinky LED Christmas Tree Pin comes ready to use with 2 CR927 Batteries.