Optimum Power Ultimate Mind Exciter is definitely an intensely effective male stroker. 3 speeds of thrusting and rotating action. Simple to use controller with Brought light. Totally all-in-one, wireless design. Removable and replaceable sleeve for simple cleaning or independent use.Noduled chamber for explosive results. Comfortable grip. Safe and pure for body and pleasure made using phthalate free materials Abs plastic, fiberglass stroker, Thermoplastic Rubber TPR sleeve. 3.25 inches by 2.75 inches sleeve. 9 inches by 2.75 inches overall. Stroker requires 4 AA batteries, not incorporated. Bulk weight 12.3 ounces