This is a must have for everyday if you want to get and stay healthy! I ordered this 1 and was sent 2 selling the second one that is brand new still in original packaging and never used. This is a very cool tool to have and help keep you healthy!! It takes the water normal in your life to the next level ! It turns it into Hydrogen Water ! I use mine everyday and when there is a day I maybe running late and forget to grab it I do feel the difference between drinking hydrogen water and drinking what I refer too as dead water.!!! The time for you see and feel a difference in your life varies from person to person.