1.Remineralization and alkaline function: The alkaline RO system moves one step beyond pure water only towards ultimate health in long term. Utilizing 100% natural particles, the post-filter imitates the mineral stones under the bottom of the spring lake, restoring essential minerals and alkalizing water pH to above 7.5. 2.Fast and stable water outflow: Thanks to the high capacity of 500 GPD, Frizzlife tankless PX500 can serve your family with instant freshwater from drinking faucet, filling a cup of water within 10 Sec. The package has a delicate brush nickel faucet included. Frizzlife also provides a Matte black choice for the faucet. 3.Filter life monitor and TDS meter: The color-coded indicators will remind you to change the filter cartridges in advance. Blue stands for good while red indicates a change of filter. A 3rd party TDS pen is also included in the package. 4.Super low drain ratio: The advanced RO filtration technology of the tankless Frizzlife PX500 purification system produces less water. Generating 1.5 cups of purified RO water will only produce 1 cup of wastewater. 5.Ingenious tankless design: Frizzlife PX500 under counter purifier is designed as an integrated unit without a bulky water tank, occupying much less space. It also eliminates secondary pollution due to an unventilated tank for your drinking water. 6.Easy installation and quick change:The integrated unit can be installed all by yourself within 30 min following a comprehensive installation video and a step-by-step user manual. The filters are super easy to change by a single twist!