For a more powerful experience, the Bathmate Hydromax9 is for more experienced users than the Hydro7. Providing 35% more pumping power, the Hyrdromax9 benefits from improved results that are visible in minutes. The Hydropump technology employed by Bathmate allows for a safer, more effective experience than other air-vacuum pumps. When using warm water, the experience is both more comfortable and more effective. The water also serves to protect the penis from the edges of the pump, and ensures than equal pressure is provided along the entire length.