Endorsed by Dr. Joel Kaplan. Firm yet flexible stimulator angled for versatile prostate stimulation. 10 powerful functions of vibration. pulsation. and escalation. Push button controls with auto off. PVC (probe) ABS (cap). Batteries included (2 N). 3x .75/ 8 cm x 2 cm (able). 3x 1/ 8 cm x 3 cm (external stimulator).