1. 45° angle professional nozzle*, meet a variety of oral needs. 360° rotatable nozzle, deep into the mouth&more dead spots.
2. Food-grade* cushioning silicone material, transparent imported PCTG material, to protect the gums from harm.
3. The water tank can be used for about 2 minutes when it is filled at a time, accurate to each tooth gap, ensuring that each tooth gap is flushed atleast 5 times.