On September 15th, 2015 a special MagicBand was released, sold only at the Mickey’s Not-So-Scary Halloween Party! paid event in the Magic Kingdom. This MagicBand is Limited Edition to 4000, comes in a special box, and does make lights and sounds at FastPass+ touch points only in the Magic Kingdom. The box for this band is the first to have special graphics on the back. Disney’s merchandise SKU barcode for this MagicBand is 400009759969.
https://www.youtube.com/watch?v=hLui27whHec