Experience fast, mineral-enhanced reverse osmosis filtration with the Waterdrop X12-WAB bundle, including the X12-WAB system and one additional WD-F2 replacement filter. The 11-stage filtration system uses a 0.0001-micron RO membrane to help reduce TDS, PFOA, PFOS, chlorine, fluoride, arsenic, lead and other impurities. The system is certified to NSF/ANSI 42, 58 and 372 standards for selected filtration performance and material requirements. With a 1200 GPD high-flow capacity, the tankless design provides filtered water on demand while saving valuable under-sink space. Mineral-enhancing filtration adds selected minerals such as calcium and magnesium for a smooth, balanced taste. The smart black faucet supports quantitative dispensing and displays real-time TDS and filter-life information. A 3 :1 pure-to-drain ratio helps improve water efficiency. The additional WD-F2 filter features 5-stage filtration with activated carbon and scale-inhibiting media and provides up to 6 months of use. Tool-free replacement takes about 3 seconds with automatic water shutoff.