The only problem i have with the sabers, is that in one of the hilts, i think the wires or something is loose and therefore dont emit any blue hue into the blade. Im looking more into it myself and i'll reach out if i have any more problems. Otherwise, excellent design. One other thing i have, is the metal kinda leaves blisters on my hands, but im working through it. I even got my siblings into saber dueling, and they love it! Its a great product, and i'll expect more greatness like this in futu...