INNEST UV Flowing Water Sterilizer utilizes ultraviolet (UV) light to kill or deactivate bacteria, viruses, and other microorganisms present in water. The device is typically installed in a water pipeline or carried in a handheld device, and water is passed through it. The UV light from the device deactivates the microorganisms present in the water, making the water safe for use for drinking and other purposes. It is an effective and chemical-free way of sterilizing water and is commonly used in residential, commercial, and industrial settings.