ZOLO's Aquapump Pro features a cutting-edge manual pump design that offers the ultimate solution for enhancing your intimate experiences. With precise pressure control, this device allows you to customize your stimulation to perfection. Made for use in and out of the bath or shower, use with water as a water pump or the included easy grip pump as a traditional air pump. The 10 inch snap ruler monitors and measures your progress, while the 60 inch neck strap allows for a hands-free shower experience.