To activate your LED Jingle Bells Reindeer Antlers, turn the switch located behind the headband to the "On" position and watch the lights scroll from bottom to top. LED Jingle Bells Antlers come ready to use with 2 replaceable AG13 Batteries. Specifications: LED Colors: Yellow, Red & Green LED Jingle Bells: 2 Red, 4 Gold Dimensions (W x H): 9.5" x 12.5" (Antlers are 7.5" tall)