It would be quite smart and not a bit reckless. To pick up a Halloween String Lights necklace. You’ll be excited and your friends will remark. And that little trick or treater will be seen in the dark. To activate the Deluxe Ghost String Lights Necklaces simply push the knob on the side of the battery pack in. Set the light up Halloween necklace to a still light or a blinking function. Approx. Length: 29″in. LED Colors: 8 Blue Comes ready to use with 2 replaceable CR1220 Batteries.