The original shower massage Showerhead's power engine is driven by a 360 Rotary Turbine, turning ordinary water pressure into penetrating, soothing, pulsating, exhilarating power. 124 spray channels provide full body coverage and dynamic delivery of up to 2800 massaging pulses per minute at 80 psi. The durable, easy to clean arm extends up to 15 inches, allowing for an infinite variety of positions. Flexible, yet stays where you put it, the flexible massaging showerhead is easy to install, simple to adjust.