Rumble features a removable head made of Tantus’ own unique formula of 100% Ultra-Premium Silicone which makes completely cleaning the contact surface a breeze. Hygienic, 7 Speeds, Cordless & USB Rechargeable, Comfortable Ergonomic Grip, Easy To Reach Speed Controls, Easy to Clean. Head Width: 2.4", Head Height: 1.5", Full Length: 8.5", Weight: 6.6oz. Free tester with $250 of Tantus purchase. Must be ordered at time of purchase. 1 tester per store per year.