With the new ultrasonic motor technology, the XESS D4 toothbrush can realize the free switching of 5 modes and 3 intensities, easily meeting the daily needs. At the same time, through the interconnection of Bluetooth and mobile app, it can analyze users' brushing habits, record each tooth information, and display the data on the smart phone through the mobile application software, so as to help users care for their teeth more intelligently. With wireless charging technology, it is safe and reliable; the portable box specially designed for travel has the functions of storage and charging, making the travel easier and more comfortable without worrying about the endurance of toothbrush. With a professional cleaning and disinfection box, the brush head is completely cleaned by the combination of ultrasonic and ultraviolet radiation to ensure health and safety. The whole machine is designed in the form of combination of adhesive coating and metal plating effect, with fine texture and metallic luster. The unique double-sided key design is more differentiated and practical.