Sununu ultrasonic scaler upgraded version six advantages High-definition lens: 500W high-definition pixel intelligent visible without hurting the gums Whole body waterproof: IPX7 grade waterproof machine body integration, worry-free rinse WiFi chip: Connect to mobile phone APP for clear and visible tooth gaps Power-off protection: The scaler stops automatically after working for 10 minutes to prevent overheating and needs to be restarted. Powerful vibration frequency: Ultrasonic high-frequency vibration cleaning is more convenient, 210-360 million times/min sound wave vibration frequency Three modes: Gentle mode gently removes plaque/stains, standard mode removes stubborn tartar like smoke stains and tea stains, strong mode removes dental calculus, and cleans teeth forcefully