Aqua Washer Special Set AIM-OC11/AIM-OC11N Nippon TV Poshure Although unused, the contents have been opened once for confirmation. Please refrain from purchasing if you are concerned about this. Power-on tested. [Product Description] Care for dirt in between teeth and periodontal pockets with a powerful water stream! Easily care for dirt that cannot be removed by brushing your teeth Easy to use! After brushing your teeth, fill the tank with water and spray it between your teeth and gums for 1-2 minutes throughout your mouth! Despite its compact size, it sprays high-power water pressure and efficiently removes dirt from between teeth and periodontal pockets in a short amount of time with its strong cleaning power. If you have any questions, please feel free to comment. 😊