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. Measurements: 5.5 inches in length, 5 inches wide. Material: ABS, steel, rubber. Color: Black. Note: Requires 3v cell battery, included