1. Material: microporous PP mesh, PET cotton, activated carbon particles, ion exchange resin 2. Four layers of deep filtration to purify and soften water 3. In order to ensure a better filtering effect, it is recommended to replace the filter element and filter assembly once a month. 4. Connect to Mijia APP, remind the filter element replacement on time. One-click order for filter material set, smart and considerate. 5. Instructions for use: - First, rinse the filter element with clean water for 2 minutes to remove the activated carbon, which is caused by the collision during transportation. - Install the filter element in the filter element groove. - Put the top cover back on the water storage tank. - Long press the filter element reset button at the bottom of the water dispenser for 2 seconds, the mode indicator will turn white and the filter element will start timing again.