Want some holiday glitz and glamor? Pin this tree on and hear quite the clamor! To activate your Flashing Glittering Christmas Tree Pin, remove the battery protector & press the button on back. Christmas Tree Pins attach by safety pin. LEDs: 1 Green, 1 Red, 1 Blue Dimensions (HxW): 2 in. x 1.75 in. Flashing Tree Pins come ready to use with non-replaceable batteries.