AQUAVI Mineral Spring has not only a slim & compact design, a high-performance cartridge, and sanitary & easy filter replacement. Removing 99.99% of the 1,000+ contaminants including viruses, bacteria, chemicals (PFAS/PFOA/PFOS, Pharmaceuticals), heavy metals (Lead, Arsenic), chlorine, TDS (fluoride, nitrates/nitrites), etc. Auto shut-off system and Nanotechnology as a water purifier, but also convenient changeable tray by magnetic. It has also no annoying noise and no electricity when the machine is open, it shuts off the feed water and releases the internal pressure, which will help you replace filters.