Oral Irrigator Jet Washer Orthodontic Self-Adjusting Water Pressure Function Plaque Removal Toothbrush Interdental Brush Interdental Cavities Periodontal Disease Bad Breath Teeth This easy-to-use oral irrigator features a 300ml large-capacity tank, full-body waterproof design, and strong, standard, weak, and DIY modes. - Model Name: Intelligent Water Flosser - Water Tank Capacity: 300ml - Charging Method: USB Charging - Mode Settings: Strong, Standard, Weak, DIY - Waterproof Performance: Full Body Waterproof - Design: Ergonomic Design I bought this for orthodontic treatment, but I never used it because it was too much trouble for me to take out and put away (store). I did open the package.