Our LED Patches are approximatly 8" x 5". They are sound activated as you can see in the video. They run off of a small battery pack powered by 2 AAA batteries.
Each LED patch has a sticky adhesive back so it wi easy to apply the patch to a variety of surfaces. Your patch will also come with 12 inches of adhesive backed Velcro so you can apply to a T-Shirt or Hat and remove when you need to wash the clothing.
Battery pack will easly disconnect from patch and has 20 inches of wire so pack can be placed in pocket. Battery pack also has a clip so you can clip it to your clothing.