Applicable age: Adult Accessories: host, nozzle*5, USB charging cable*1, manual*1 Power supply method: USB charging Battery capacity: below 800mAh Charging time: 4-5 hours Battery life: 20 days Maximum power: 1.5W Noise: ≤65db Water tank capacity: 350ml Pulse: 1006 Waterproof level: IPX7 Features Interdental massage, oral cleansing, strong pulse, and the whole machine is waterproof. Professional care and cleaning Solve a variety of oral problems, leaving teeth clean and free of residue Gravity ball absorbs water, splash-proof silicone cover, 350ml large water tank capacity, three modes can be switched at will: Gentle mode: gentle water pressure, suitable for novices and people with sensitive mouths High pressure mode: high water pressure, efficient cleaning, suitable for most people Pulse mode: Pulse water pressure can massage the gums and buffer the whole body for water washing