Review on 💡 Energy Hands by Steve Spangler Science: Unleashing the Power of STEM by Jeremy Black

I ordered these for informal science classes, specifically study circles. Unlike the energy tubes I've bought elsewhere, these have a matte finish on the top of the tube so the circuitry inside isn't visible. They are not suitable for my purposes. As a fun science toy, they are good. Please note that they are slightly smaller than others I have purchased.