Replacement Ionizor Footbath Array for the ionSpa in either Pro or Portable versions. This a ready to go, complete array already loaded with plates with two spare pairs included. Please select Pro (short cord) or Portable (long cord) and Array metal plate type: Type I, more color in water, most popular (approx 50 uses) Type II, almost no color in water, longer life (approx 100 uses) Both types of plates yield the same results. Type II is great for home use because they are less messy to clean up after a session.