1.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. 2.DIY Installation and Easy 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! 3.Super Low Drain Ratio: The advanced RO filtration technology of the tankless Frizzlife PX500 purification system produces less waste water. By generating 1.5 cups of purified RO water, it will only produce 1 cup of wastewater. 4.Fast and Stable Water Outflow: Thanks to the high capacity of 500 GPD, Frizzlife tankless PX500 can serve your family with instant freshwater from the 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. 5.Filter Life Monitor and TDS meter: The color-coded indicators will remind you to change the filter cartridges in advance. A 3rd party TDS pen is also included in the package. 6.Multi-Usage: The purified water from Frizzlife PX500 RO filtration system is perfect for cooking, coffee, tea making, and other daily usages. It can simultaneously serve both your sink and refrigerator by using an ice maker kit. Frizzlife also offers a mini water tank which helps boosting water pressure for better ice cubes.