【High Quaity & Ultra-Quiet】 Made of 304 food-grade stainless steel and ABS materials, the automatic cat water fountain is more rugged and corrosion resistant.The pet water fountain produces a noise level of 20dB, only the sound of water flow can be heard, even if it runs at night, it will not affect your sleep. 【4-level Filtration System】 The 4-level filtration system continuously provides fresh and healthy water to your pets. 1.Activated carbon removes bad taste and odor 2.Ion exchange resin could soften the tap water 3.Microporous cotton filter filters fine hair and fine particles. 4.Non-woven fabric could filter hair and impurities. 【2.2L Large Capacity】Worry less about your furry friend running out of water. Our automatic cat fountains for drinking features a generously sized water reserve tank to help you avoid frequent refilling, ensuring your pets are healthy, hydrated, and happy. Also, the pump automatically stops when the water level is low to ensure safety. The water-level window and LED Light let you observe how much water your pets drink in real time, and lets you see exactly when you need to fill the water bowl.