water save shower head Material: Delrin &ABS&PVC Finish: Chrome Spray Settings: one Use up to 60% less water when you shower! Use up to 60% less energy How it works 1. Firstly, there is "no restrictor" in this saving-water shower head, water and energy efficient high tech device. Restrictors are easily removed, thrown away, thus defeating any potential savings. 2. Second, an air chamber creates turbulence, mixing water and air and you actually shower with bubbles that explode on the body to 30% compared to the low-flow shower head with high velocity and a constant massage feeling for the user. 3. Third, an automatic water flow control valve provides the feeling of constant high pressure and constant water flow rate of 1.5-gpm (+/- 5%) from 15-psi to 120-psi. No other shower head has this patented feature 4. Fourth, engineered to be self-cleaning, no mineral deposit buildup. so product life is long enough.. 5. Last, it provides greater usage savings of 40% to 70% on this water-saving shower head compared to low-flow shower head Pressure (mpa)Flow( Gallons per Minute) 0.02 0.0589 0.05 / 0.1 1.326 0.15 1.603 0.3 2.188 0.6 3.045