Deep Cleaning, Improve Health: cordless water dental flosser pick endorsed by American dentist experts, this water dental flosser can offer high water pressure dual-thread water pulse 1400-1800 times/min and 30-150PSI strong water pressure to achieve deep cleaning of teeth. This water cleaning pick can effectively solve and prevent various problems such as bleeding gums, bad breath, and decay Upgrade 4 Modes with DIY Choice: This cordless water dental flosser pick has been upgraded to DIY mode, allowing you to customize your own cleaning mode based on your teeth conditions to protect your gums, more suitable for people with gums. It also has a memory function for one-click use next time. This water dental flosser pick takes better care of your cavity in a more scientific way and is also very easy to use 300ML Large Tank, Wide Mouth, Easy to Clean & Refill: Equipped with a 300ml extra-large detachable water tank, this cordless water dental flosser pick eliminates the need for repeated refills during a single use, more convenient. Additionally, the wide mouth reservoir design not only makes it easier to refill, but also solves the problem of difficult cleaning in traditional models. Easy to thoroughly cleans every corner and ensures your cleaning safe and worry- IPX7 Waterproof & 3 Years Durablility: This cordless water dental flosser is built to last with IPX7 waterproofing, allowing for easy cleaning and safe use in the shower. The upgraded motor provides more effective cleaning and increased durability, lasting up to 3 years. 30 Days Extended Battery Life for On-the-Go Use: The portable water dental flosser features a powerful eco-friendly battery that lasts double the time of other models. With just 3 hours of charging, you can enjoy up to 30 days of use. Its compact and lightweight design makes it perfect for use at home or on-the-go, and it comes with a USB cable (adapter not included) for easy charging.Note：Only 5V/1A/2A/3A adapter is suitable, Please use the correct adapter for charging