Electric Toothbrush Intelligent Sonic Vibration Soft Toothbrush Teeth Cleaner Household Dental Scaler Teeth Whitening Device IPX7 Waterproof Remove Yellow Teeth Tartar Fresh Breath Teeth Cleaning AA Battery Features: 1.The lightweight and portable sonic toothbrush is made of non-slip materials with an ergonomically designed handle, bringing you a comfortable tooth cleaning experience. 2.High-frequency sound wave vibration deeply and powerfully cleans the mouth, effectively removes periodontal bacteria, tartar and calculus, inhibits tooth inflammation, gum bleeding, and prevents gum atrophy. 3.One-key operation (power on-work-off), a cleaning mode, simple and quick to operate, saving time and effort. 4.The toothbrush head adopts imported slender soft bristles that have been uniquely cut and rounded, which fits the tooth curve, effectively cleans the teeth, cares for the gums, and reduces tooth damage. 5.IPX7 waterproof: The whole machine is waterproof, no need to worry about soaking and damp, it is safer to use. * How to use: When using this product for the first time, some people will feel irritated and numb due to the high-speed vibration of the bristles. Please don't worry, this is a normal phenomenon. This feeling will gradually weaken in later use and adapt to the vibration frequency of the toothbrush. Specifications: Material: ABS Color: white Size: 14*2.5*2.5cm Packing size: 24.5*6*3cm Battery type: 1* AA 1.5V alkaline battery (not included in delivery) Packing List: 1* Host 3* Toothbrush Heads Battery installation method: 1. Open the battery cover at the bottom of the toothbrush counterclockwise; 2. Choose the brand new alkaline AA battery and install it with the positive electrode facing outwards; 3. Close and tighten the bottom battery cover in a clockwise direction; 4. After installation, pre the switch start button; Instructions: 1. Squeeze a small amount of toothpaste (le than ordinary toothbrushes); 2. Don't use you like a manual toothbrush. Gently place the bristles on the junction of the teeth and gums. Use the high-frequency vibration of the brush to clean. Change the next brushing area after 30 seconds; 3. Replace the brush head every 1 month.