U1 from RKIN is an affordable, zero-installation, temperature-controlled water filter system that transforms tap water into pure, healthy, and alkaline drinking water. The countertop system uses reverse osmosis to transform tap water into alkaline and antioxidant, hydrogen-enriched water. U1 operates similarly to a countertop coffee maker—no hoses or installation required. It has a customizable default water temperature setting so users can enjoy their water hot or cold. There’s also an instant hot water function with precision temperature control. U1 by RKIN features an advanced filtration system with five stages to remove up to 99% of all contaminants, including fluoride, chlorine, pharmaceuticals and heavy metals like lead.



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