1.[300ml Detachable& Cleanable Water Tank]:300ml water reservoir perfect for enough and uninterrupted oral dental water pick teeth cleaner without filling in water again and again. The upgraded removable full-opening water tank allows you to thoroughly clean the limescale and dental plaque, which is impossible for common oral irrigators. 2.[High Efficiency Improve Gum Health and Teeth Clean]: With 1600-1800 times/minute high pressure water pulse . The cordless water pick teeth cleaner can powerful cleaning 99.99% food debris and plaque every corner precisely that traditional brushing can not reach. Specifically designed for periodontitis, braces. 3.[ Powerful Battery with USB Cable]: Built-in latest technology lithium battery, the usb rechargeable water pick teeth cleaner cordless water dental flosser will last up to 21 days continuous use after one fully charged in just 4 hours. USB cable is included. 4.[Clean Modes with Memory Function]: Pulse modes for choosing with Low-noise Design, which can meet various oral needs. Preseta mode before use and the innovative Memory Function helps keep on with your preferable mode for next use even if the portable water dental flosser has been turned off. 5.[Portable Design with Storage Bag for Travel, Camping,] Cordless and lightweight, this portable water pick teeth cleaner with a storage bag is ideal for travel and every outdoor activity as well as home use.4 interchangeable jet tips included for your whole family.