Thank you very much for taking a look! ✦ Free Shipping, Brand New, Unused, Immediate Purchase OK! ✦ Reliable operation confirmed. Offered at a price definitely cheaper than Amazon. Reference price at the time of listing: 【Amazon Price: ¥4980】 【Achieves all-around care with 6 types of high-performance nozzles】The AQielev oral irrigator is equipped with a tongue scraper for preventing bad breath, a periodontal nozzle that instantly removes dirt around the interdental spaces, and 4 standard nozzles that deeply clean even the blind spots of the oral cavity that a toothbrush cannot reach. 【Dentist Certified, Ultrasonic Compression, 0.5mm Ultra-Fine Water Jet!】The water flosser was jointly developed over two years by a factory with 15 years of experience in oral care device development and a team of experts. This product, which has received test certification from international professional organizations, easily cleans the gaps in orthodontic appliances with a 0.5mm ultra-fine water jet and reduces irritation to the gums. 【350ml Ultra-Large Capacity Removable Tank, Upgraded Gravity Ball Design】Equipped with a 350ml ultra-large capacity tank, one filling per day is sufficient. The upgraded gravity ball design ensures stable water supply from multiple angles, without wasting a single drop of water in the tank, achieving deep cleaning of the entire oral cavity. The tank is rotatable and removable, making cleaning easier. A dedicated button is located on the side of the tank. Filling with water is easy, and dental care is more convenient. 【2000mAh Professional Power Supply, Can be Used for 30 Days on a Single Charge, Ultra-Long Operation】The oral irrigator is equipped with voltage stabilization chip technology, ensuring a stable water flow even at high and low output, avoiding the problem of "output decline due to power decay." In addition, it has a built-in 2000mAh lithium battery, and can be used for about 30 days with a 3-6 hour charge. Frequent charging is unnecessary, which greatly reduces the hassle of charging. It is also ideal for business trips and travel, allowing you to enjoy comfortable oral care anytime. Please feel free to comment if you have any questions.