Oral Irrigator Jet Washer [4 Water Flow Modes, DIY, 350ml Large Capacity] IPX7 Waterproof Electric Oral Irrigator Supervised by Japanese Dental Professionals, 99.9% Plaque Removal Rate, Tartar Removal, 6 Professional Nozzles, USB Rechargeable, Portable Electric Oral Irrigator, Compact Design, Perfect for Home and Travel Developed over 2 years by a factory with 15 years of experience in oral care device development and a team of dental specialists! Built-in 2000mAh lithium battery, can be used for about 30 days with a 3-6 hour charge. Features 4 water pressure modes (Strong, Standard, Weak, DIY mode) to select the water flow strength according to the condition of your gums. Equipped with a 350ml super large capacity water tank. Brand new, unused item (opened for photography).