Smart pump with indicator light: The pump is silent (below 30 dB). The low voltage pump usually lasts 3-4 years. Observe the water level through the window, when the water level is too low, it will turn from blue to red. Automatic shut off pump for dry run protection. LARGE 3L CAPACITY: It has a water capacity of 3L which means it is ideal for small to medium sized pets. The circulation system helps provide healthy and hygienic water to beloved pets all day long. TWO SMOOTH DESIGNS: The pet fountain has two modes, drinking faucet and soft fountain. They attract pets' attention and encourage them to drink water more often. Filtered water: 3-layer filter, the sponge can catch cat hair and debris, the ion-exchange resin layer can soften tap water, the third layer of activated carbon can remove bad taste and odors that provide fresh, clean water for pets. Eco-friendly material: This fountain does not come with an adapter, the length of the cable is 1.2M. The pet fountain made of high quality non-toxic and odorless plastic material. A simple quick release structure is designed for easy removal and cleaning.