Glow Snowflakes LED Big String Lights Necklace is a frost-y good time! Celebrate Christmas with lovely, detailed light-up snowflakes on a blue necklace with breakaway clasp. To activate Glow Snowflake LED Necklace, remove pull-tab from battery house and press button for 3 light functions: Strobe, Flash, Pulse. LED Colors: 9 Blue. Necklace Length: Approx. 40". Snowflake Diameter: 2.12". Glow Snowflakes LED Big String Lights Necklace comes ready to use with 3 pre-installed, replaceable AG13 Batteries.