This countertop Reverse Osmosis Water Filtration Purification system is designed to convert tap water into healthy drinking water through a filtration system: pp non-woven, activated carbon, and 0.0001 micron RO membrane. This process can remove 99.99% of more than 1,000 contaminants, including chlorine, TDS, heavy metals, and other harmful substances. The main bottle can hold up to 5L tap water. The LED screen displays real-time TDS, and the lifespan of the filter, which reminds you to replace it. PPC composite filter needs to be replaced between 6-12 months and the RO filter can service 12-24 months. Different volumes of water can be chosen with one click. The smart panel is also configured with an automatic screen off mode. If nothing is done after 60 seconds, the panel will be locked. Touch any key to wake up the panel. No tools are needed to install it, simply plug it in and it'll be ready to use. Dimensions: 16"L x 7.7"W x 14.4"H