- In addition to "self-cleaning" that cleans the nozzle with water before and after using the washlet, it also automatically cleans and disinfects the nozzle inside and outside with "clean sanitizing water" after using the toilet. - "Premiest" technology that makes dirt resistant and easy to fall off ■ Eliminates the seams of the toilet seat that are difficult to clean and easy to clean. ■ Main unit one-touch detachment ■ Auto power deodorization ■ Auto open and close