Intelligent ultrasonic recognition, the needle will stop vibrating when it touches soft substances such as gums . Deeply cleansing power, effectively removes stubborn tartar such as tobacco, coffee and tea stains Equipped with LED lighting, easy to use and suitable for beginners and the elderly . Made of medical grade stainless steel material and equipped with professional health and hygiene scaling tip design . With the dental mirror, you can clearly see the stone on the inside of the teeth and the back molars without leaving a dead angle . Automatic shutdown after 10 minutes of use to prevent overheating of the needle.Specifications: Item name: DR.BEI YC2 ultrasonic scaler .Rated voltage: 3.7V . Input voltage: 5V-1A . Rated power: 1.8W . Waterproof: IPX7 . Materials: ABS Product dimensions (L x W x H): 22.00 x 3.00 x 3.00 cm / 8.66 x 1.18 x 1.18 inches 4 Note: Actual use may slightly differ depending on the specific situation Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Package List: 1 x Dental Scaler Holder; 2 x wide head 2 x pointed cleaning head 1 x Mouth Mirror 1 x wrench 1 x charging cable 1 x Manual (CN)