Jura Filter Cartridge CLEARYL Smart delivers the highest quality water to create better tasting coffee. Positioned directly in the water tank, the CLEARYL filter freshly filters the water every time coffee is prepared. It completely absorbs harmful substances while retaining important fluorides, which help the flavors to ly develop. Radio-Frequency Identification Device technology allows your coffee machine to communicate with the filter, recognizing when a filter has been inserted and automatically activating the appropriate mode. It continually collects information about filter use and alerts the user when the filter capacity has been exhausted. This feature also helps when it comes to changing the filter.