I charged it to check the operation, so it's practically unused. IGYLAR Oral Irrigator, Dentist Jet Washer, Cordless, Rechargeable Y205N, 5 Modes, 30-140PSI Adjustable Strength, 300ML, 2000mAh Large Capacity, IPX7 Waterproof, 4 Replacement Nozzles Included, Portable with Storage Pouch 【Latest Improved Model & Industry's First High Output, Cleans the Mouth】Thanks to you, the previous model Y205 sold tens of thousands of units. After reviewing various feedback, the latest improved model -- Y205N has arrived. All the shortcomings have been resolved. The new model has improved the structure and material of the internal water pump, eliminating water-related issues. An oral irrigator is a product that uses water pressure (30-140PSI) from a thin nozzle to clean away dirt that cannot be removed by a toothbrush or floss alone. With a rotation speed of 1400-2100r/min, it quickly blasts away food debris stuck in teeth and gaps, and washes away dirt from areas with misaligned teeth. Conventional products often only have 40-100PSI, which experienced users may find insufficient. For beginners, it may be too strong. 【Evolution of 5 Modes & 6-Level Adjustment & Memory Function】It is equipped with 5 operating modes (Normal / Point / Pulse / Brace / Pause) that allow you to choose the strength according to the condition of your gums, and you can switch freely with one button. With the 6-level adjustment function, you can freely adjust the water pressure strength, eliminating the dissatisfaction of being too strong or too weak with the specified water pressure levels, allowing you to find a comfortable water pressure and meet various oral care needs. It has a memory function that remembers the water pressure level used previously, so you can clean with the same water pressure next time. 【2 Types of 4 Nozzles & 360° Rotation】Includes 2 types of 4 replacement nozzles. 3 water flow nozzles are included, which can be used with your family. Of course, 1 point polishing nozzle is also included, which can be used to clean hard-to-reach areas such as areas with misaligned teeth or orthodontic appliances. The 360° rotatable nozzle design allows you to clean even areas that are difficult to reach with a toothbrush. It is designed based on ergonomics, so it can be easily held even with small hands. 【300ML Large Capacity Tank & IPX7 Waterproof】Equipped with a 300ML large capacity tank, reducing the number of times to refill water. You can see the remaining amount of water in the water tank at a glance.