Bristle specification: DuPont Vibration frequency: 33000-41000 times / min Endurance time: 200 days (in sensitive mode) Battery Specification: Lithium ion /18650/2900mah working voltage: 3.7V Motor type: Magnetic levitation acoustic motor Waterproof grade: IPX7 Charging mode: contact charging Key: Single button Working mode: 5 modes Item Type: Electric Toothbrush Certification: CE,CCC Origin: Mainland China Commodity Quality Certification: 3C,ce Age Group: All Material: DuPont Quantity: 1 Type: Acoustic Wave Number of operating modes: 4 or more Power type: Rechargeable Bristle stiffness: SOFT Function: Deep cleaning mode,Whitening mode,Mode "gentle cleaning"
