4 Interchangeable Jet Tips 4 variously functional jet tips for daily use, sensitive teeth, deep cleaning and tongue brushing respectively. Ultra Fine Water Jet Stream Produces 0.6 mm water jet stream which provides 80 - 120 psi strong water pressure and ensures cleaning all the gaps thoroughly. 360° Rotation When the tip reaches down into the mouth, it could be adjusted to different angles flexibly to reach different areas. Considerate Design The intensity is preset to be gradually increasing in the first 3 seconds for easier adaption. The strength increased gradually would soothe and protect your oral tissue. Water picking has an adavantage over traditional dental floss, it applies to wider range of people, cleans more thoroughly, especially friendlier to people who wear braces. Detachable Water Tank The 220 ml water detachable tank is well sealed, could provide enought water for producing stream lasting for 60 seconds. Large Capacity Battery Built in 1000 mAh battery, allows the machine to operate for a whole month on one full charge. Powerful Pulse High-pressure stable pulse stream, washes out food residues thoroughly. Warm Tip Please point the water flosser to the teeth and gaps. Use it directly on the oral tissues would not be recommended. One Button Control Press to turn it on/off. Long press to switch modes. How to Use 3 Intensity Modes Weak: Produces gentle water stream, suitable for novices and those who have sensitive teeth.Strong mode: Produces standard water stream, suitable for using after meals.Pulse mode: Produces a water stream that its strength varies from 60psi to 100psi continuously. Original Ultra Portable Add to Cart Buying Options Customer Reviews 3.8 out of 5 stars 368 2.0 out of 5 stars 2 Price $21.99$21.99 — no data Dimensions 8 '' x 2 '' x 2 '' 5.7 '' x 2 '' x 2 '' ( Folded )