Increase your endurance and maximize your pleasure with the Optimum Series Rechargeable Advanced Waterproof Pump. Designed for powerful results, this sleek, durable automatic pump offers superior suction at the push of a button, perfect for both beginners and experienced users looking to take their play to the next level. Explore 3 powerful speeds of automatic suction to find the perfect level of intensity. The ultra-flanged base creates a secure seal, while the removable Silicone donut provides added comfort and a personalized fit. An easy-to-use quick air release button lets you effortlessly control the pressure, and the clear cylinder with incremental measurements allows you to easily track your progress. Phthalate Free Rechargeable Measurements: 8 in x 2.5 in/20.25 cm x 6.25 cm (cylinder) 3.25 in x 1.25 in/8.25 cm x 3.25 cm (donut)