[Pure Water - Pure Savings] - Embrace the pinnacle of cost-effectiveness without sacrificing quality. Our Mist Reverse Osmosis Water Filter System stands as the market's most affordable solution, crafted for exceptionally pure water. Mist, the higher standard in affordable water filtering. [Highly Efficient] - 4 Stage filtration, dual filter, compact, under-sink system with a smart stainless-steel faucet included. With a high filtration capacity of 600 gallons per day, the tankless RO water filter system produces instant pure water to the provided faucet, filling a cup of water within 18 sec. It installs conveniently under the sink in an upright position (17.1” X 5.4” X 15.9”), saving over 70% more under-sink space than an ordinary RO system. [Tankless Design] - Ensures safe drinking water. It curbs bacterial growth and water wastage by filtering during dispensing, not storing. Traditional tank systems risk bacteria due to stored water. MRO003 RO system has 2:1 drain ratio, conserving 600% more water. Efficient, quiet, eco-friendly. IAPMO R&T certified for material safety, structural integrity, TDS reduction, and NSF/ANSI 372 Lead Free compliance (File Numbers WP-14153 & WP-14154). [Dual Filter] - This tankless RO system is equipped with a dual filter design, ensuring the finest filtration, while prolonging the filter life. This system uses a PCT composite filter and reverse osmosis membrane filter to optimize filtration. The PCT (MPF1) filter is a 3-1 function filter: PP Sediment, Carbon Fiber, and Post Carbon Block. This guarantees the finest filtration. [Filter Functions] - PCT (MPF1) removes sand, rust, chlorine, odor for better taste. RO (MRF3) cuts 93% TDS, arsenic, lead, metals. MPF1: 8-12 months/1600 gallons. MRF3: 12-24 months/1300 gallons. Quick 2-3 sec twist-pull replacement.