1.Clean and Sewage Separation:This smart pet water fountain has a built-in smart water change system that can update the water source regularly.The independent dirty water tank and bowl design effectively separates the waste water from the drinking water to ensure that your pets can drink fresh water at any time, which makes the drinking water r for your cats or dogs 2.Wireless Design:The cat water dispenser has a wireless portable design, allowing the dispenser to be placed at will without plugging in. Suitable for home, balcony or outdoor use, not limited by power location. No need to worry about tangled wires, more convenient for pets to drink 3. Water Tank: The pet water fountain water tank has a capacity of 3,000 ml, which can meet your cat's drinking needs for about a week (depending on the frequency of water changes), which ensures that your pets have fresh, flowing water all day long, and at the same time, gives you peace of mind on your short trips 4.Long Battery Life: The wireless cat water fountain is equipped with an energy efficient battery that lasts up to 180 days on a single charge, as well as a battery indicator so you don't have to charge it as often; there is also a tank capacity indicator, and the water tank is easy to lock and unlock