Features: Use air pressure technology to generate strong water flow for flossing. Wireless and battery-free, it removes food particles between teeth. Can also be used effectively with braces and dental floss. Add a small amount of mouthwash to the nozzle for a cleaner feeling. Made of high-quality plastic material, durable. Specifications: Project Type: Dental Waterjet Material: plastic Color: blue Product size: 21*3*3cm Weight: 103 grams Note: Please refer to our user manual before using the water jet. Disconnect the water tank and completely immerse the pump housing, pipes and nozzles in the water (especially make sure the silicon ring is well connected, otherwise there will be no power/leakage). Hold the button down for at least 60 seconds until it starts to bubble. Then lift the nozzle end out of the water and press the button to make sure the unit is working properly and has a steady jet. If the water pressure is not enough, hold the nozzle and press the button several times to release the nozzle. Features: 1. Use air pressure technology to generate strong water flow for flossing. 2. It is wireless and requires no batteries, and can remove food residues between teeth. 3. It can also be used effectively with braces and dental floss. 4. Add a little mouthwash to the nozzle for a cleaner feeling. 5. Made of high-quality plastic material, durable. Package includes: a set of tooth cleaners Note: 1. Please allow some errors due to manual measurement. Please make sure you don't mind before bidding. 2. Due to different monitors, colors may vary, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/box without name, etc.) is incorrect, the order will not be delivered correctly. )