【Superior and Effective Cleaning】 usmile CY0 ultrasonic dental irrigator is gentle and more effective than traditional pulse flossers. Thoroughly and effectively cleans food particles and plaque, preventing tartar buildup and keeping teeth and gums fresh and healthy. Ideal for first-time users, orthodontic wearers, and people with sensitive gums 【4 Cleaning Modes】 The dental flossers have four different modes including massage, soft, standard and strong to suit different user needs and preferences and offer a wide range of cleaning options. Equipped with 2 rectangular 360° rotating nozzles, the rectangular concentrator nozzles better fit the teeth and allow precise cleaning of hard-to-reach areas 【Gentle on Gums】 The 3-second progressive technology of this ultrasonic dental cleaner helps protect gums from excessive pressure, providing the user with a comfortable and safe cleaning experience. 【Easy to Use】 The CY0 mouthwash comes with a 200ml water tank so users can enjoy a continuous cleaning experience without frequent refilling. The ergonomic body design makes it easy to hold and prevents slipping during use 【Long Battery Life】The dental cleaner offers an impressive 60-day battery life on a single charge, providing users with reliable, uninterrupted cleaning power. In addition, the IPX7 waterproof rating ensures that the water flosser can be used safely and effectively in any environment. 【Hassle-Free After-sales Service】usmile oral irrigator is covered by a 30-day money-back guarantee and a 1-year warranty against quality issues. If you have any questions, please contact usmile customer service.