[All-In-One Water Dispenser for Your Home] This hot and cold water dispenser is ideal for families who want convenient access to water at different temperatures. It has been NSF/ANSI 372 certified for lead-free materials and passed SGS test. Here is the perfect solution to meet your water needs [Note] The WD-A1 is cleverly designed without a built-in hot water tank. Instead, it heats the water in real time, providing a refreshing experience. External factors, such as weather conditions and the initial temperature of the cup, can slightly influence the water temperature. [7 Step Filtration] This reverse osmosis water filter has been tested by an official laboratory (SGS) in accordance with NSF/ANSI 53&58&42&401. It effectively reduces 95.34% TDS, 99.5% chromium, 97.38% chromium, 99.53% fluorine, 91.67% arsenic, 99.69% lead and PFAS, PFOA, PFOS, iron, radium, calcium, nitrate, chloride and large particles. [LED Function] The LED lighting system also effectively illuminates double water tanks, always ensuring clean and healthy water. [Flexible Temperature Options] Equipped with a high-quality cooling system found in refrigerators, this water dispenser can deliver cold water up to 5°C. Its temperature adjustment range of 5-95 ℃ also makes it a great choice for brewing tea, coffee or other drinks. There are five standard cup volumes and six preset temperatures to choose from, including options for ice, room temperature, 45°C, 60°C, 85°C, 95°C. [Smart OLED Display] This hot and cold water dispenser provides a user-friendly experience by displaying water quality, volume, temperature and filter life at a glance, thanks to its smart touch keys and LED display. The convenient user experience also includes night mode, off-home mode, and altitude mode. Night mode is the ideal quiet and energy-efficient operation mode for homes or offices. [No Installation] Installation of this system requires no drilling or plumbing. Simply turn it on to use.