To activate your LED Snowman String Lights Necklace, remove the battery protection from the battery house and press the button. Necklace has THREE light functions: Fast Flash, Slow Flash, Steady Light. LED Colors: 6 White. NOTE: Lights are scattered throughout necklace, a total of 6 snowmen light up white. Necklace Length: 34″ Comes ready to use with 2 replaceable CR1220 Batteries.