This 10 mode extreme CBT ball crushing device is electrified internally, for intense sensations and rhythmic stimulation. The easy to use controller lets you cycle through all 6 intensity settings, and the adjustable screws let you control the pressure. The durable boards let you apply an intense squeeze without letting you down. Requires 3v cell battery, included. Made from ABS plastic, steel, and rubber. Measures 5.5 inches in length, 5 inches wide.