... rotates 90 degree clockwise and counterclockwise 3,Rechargeable 4,Waterproof IPX7 Rechargeable Waterproof Electric Toothbrush for adults,with rotatable brush head DES30Advantage:1,Soft ... rotating speed: 8,800rpm, can clean teeth completely;7, Replaceable brush heads, easy to be used;8, ... Voltage of charge: 100-240V4, Type of battery: rechargeable NIMH battery,minimum 600 mAh5, Inductive charger base 6, ...