【DEEPLY CLEAN TEETH IMPROVE GUM HEALTH】- Dental water jet flosser, rotating jet tips combined high pressure water pulse 1400-1800 times/min, remove 99.99% food residue hidden deep within dental cracks and the gum effectively, traditional brushing can not reach, while massaging your gums and promoting blood circulation【Upgraded DIY Model & Memory Function】- Based on the traditional 3-mode standard model, The 2020 Advanced upgraded water flosser add a DIY mode which freely customize water pressure from 30psi-120psi , especially for sensitive oral. Normal, Soft, Pulse modes meet various oral dental care needs. Memory Function helps keep on with your preferable mode for next use.【IPX7 WATERFROOF & EASY CLEANING】-The newly 300ML detachable cleanable upgraded water tank, holds enough water for 90-12 seconds of continuous flossing and allows you to thoroughly clean the limescale inside. IPX7 waterproof design is adopted in both internal and external to provide dual protection, you can use it with confidence when showering【POWERFUL BATTERY & TRAVEL TIPS BOX] - USB Rechargeable water jet dental flosser built-in 2000mhA battery, takes only 4 hours for fully charging and support amazing 20 days use. There are a USB cable, with a storage bag perfect for travel use, support power adapter, computer , car charger, power bank charging