Merriest Little Christmas Tree Flashing Holiday Lights Necklaces will bring yuletide joy around the tree with family, at the office x-mas party, or a night out at your favorite winter holiday festival! They also make wonderful stocking stuffers. Merriest Little Christmas Tree Flashing Holiday Lights Necklaces may be called Little, but are Big X-mas Trees to hang around your neck!To activate Christmas Trees String Lights Necklace, remove pull-tab from battery house and press button for 3 light functions - Strobe Flash PulseFlashing Holiday Necklaces include a breakaway clasp Merriest Christmas Tree Necklaces come ready to use with 3 pre-installed, replaceable AG13 Batteries. Specifications: LED Colors: 9 Green Necklace Length: 40" Dimensions (W x H): 2" x 2.5"