From the golden days of paintball comes the JT Revolution. This is the hopper that started it all. The Revvy is operated of a single 12 volt battery. It has break-beam eyes that “see” when a paintball passes and starts to agitate and keeps the paintballs feeding into your marker. The shells are made of super-durable plastic that can withstand the greatest of paintball terrains and demands. With the easy to operate on/off toggle switch you never have to worry about if your marker is on or off. This is a great hopper and set the golden standard of which all electronic hoppers are compared.