Amazon.com: CalExotics Optimum Power Vibrating & Thruster Stroker Cal Exotics Peak Rechargeable Pump Black Clear Automatic Penis Pump CalExotics Optimum Series Precision Pump With Erection Enhancer Cal Exotics Optimum Power Vibrating and Thrusting Stroker Black Optimum Series: Executive Automatic Smart Pump CalExotics Optimum Series: Maximum Results Pump Set CalExotics. Introducing the Optimum Series Vibro Air Pump, the world's first pressure activated vibrating pump designed to elevate your pleasure and provide an unparalleled experience. This innovative pump features a unique vibration system that activates automatically once the optimum pressure is reached, intensifying the sensations and taking your pleasure to new heights. The powerful Master Grip finger pull handle allows for easy and comfortable operation, ensuring a seamless and enjoyable experience. Features * USB Rechargeable * Superior Suction * Master Grip Handle * Textured Sleeve * Intense Vibration Inside The Box * Pump * USB Charging Cord Package Weight 17. 70 Ounces Package Dimensions 3. 00W by 13. 50H by 4. 50L inches