Product features: 1. Tap water is filtered through two-stage filter element, which can produce normal temperature water, cold water, hot water, and custom mixed temperature water, with fresh-keeping function; 2. LCD display, water capacity 150ml, 250ml and 350ml can be set, with child lock function and user setting memory; 3. The system has the function of recording the service life of the filter element. When the service life of the filter element expires, the user is reminded to replace the filter element; 4. With RFID technology.