Material: Phthalate Free PVC Batteries: 3xAA Required Product Features: 1. Adjustable bullet makes the entire toy tingle for perfect results every time. 2. Focus the vibrations on the top, middle, the base or the balls- the choice is yours! 3. Bullet is removable and is great for stimulating other areas. About the Pulsatron II Controller: 1. Pulsatron II controller has 10 pre-programmed vibrating functions 2. Offers functions in addition to speed control so its NOT desensitizing like conventional speed controllers 3. Separate on/off switch so you dont drain the batteries. 4. Lights show you which setting you are on making it easier to return to a favorite 5. Versatile! Can be used with ANY toy with a plug 6. It has a very discreet and non-phallic appearance 7. Very economical, invest once and get multiple Pulsatron toys.