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: 14 cm in length, 12.7 cm wide Material: ABS, steel, rubber Color: Black Note: Requires 3v cell battery, included