Nike Air Force 1 Black x Light SwooshAF1 with light up swoosh available in your choice of colour. These are operated via a battery pack placed under the lace and tongue where you can choose to have the lights always on, flashing or off via switch. These take 2 AAA battery which are easily available at your nearest convenience store. 4 batteries included with the sneakers so that makes it ready to use as soon as you get them :) Safety features: Low voltage and will not excessively heat