Oral-B Oral Health Center WaterJet uses the WaterJet technology that provides targeted cleaning to help improve gum health.It stimulates and massages gums, while gently removing the food particles from the hardest-to-reach areas.WaterJet helps preserve the gums, and it is designed to enhance mouth freshness and clean feeling. It has 1 jet mode which is Single WaterJet Streams that allows a targeted cleaning that helps improve gum health.WaterJet has a large 600ml water beaker. You can add a mouthwash product for better results.This box contains:- 1 station with irrigator, 600ml water beaker and jet storage.- 4 jets.2 Years Guaranty.