Note Deep Clean for Everyday Use 1. You had better close most of your mouth to avoid the water spray off. 2. Please choose the soft mode when you use it at the first time. 3. If your teeth are sensitive, please use warm water, it will be more comfortable. 4. You need to charge the water flosser for 4 hours before first time use. 5. Change new nozzles every 3 month is healthier Way to use Nicefeel Water Flosser 360° Rotatable Nozzle Design Nicefeel water pick with 300ML open water tank design which make you easy fill water Choose Mode before use this water flosser We suggest start from soft mode if you are a new user of water flosser Open and Enjoy Your Nicefeel Read more Solve a Variety of Oral Problems Standard Tips For Daily clean, ultra-fine pulsed water flow, not only uses the force of water to floss the teeth, but it massages gums and feels great while getting all the food particles out of my teet Read more Orthodontic Tip Great for people with braces and orthodontic appliances. It can be very difficult for people with braces to use dental floss around the wires of their braces. The irrigator's orthodontic tip makes it easier to get to those hard-to-reach areas. 3 Cleansing Modes for the Dental Oral Irrigator Normal: Standard Water Pressure for Experienced Userd Soft: Gentle Water Pressure for New User and Sensitve Teeth Pulse Mode: For Deeper Penetration, removing plaque, massaging gums and rinsing between teeth and gums; Big Water Tank Nicefeel water pick with 300ML open water tank design which make you easy fill water and clean after use. Read more Read more