A must-have for a busy pet: If you travel a lot and worry that your little pet doesn't have enough water, this 500ml water bottle is a must-have for you. It ensures your pet stays hydrated while you're out without cluttering the crate. Use inside and outside the crate: You can fix it outside or inside the cage according to your needs. If your pet is naughty, it is recommended to install it outside the cage. You can easily open or close the water supply for cleaning and refilling. No noise when drinking water: kaisen automatic pet water dispenser is designed with gravity flow to control the amount of water to prevent spillage. Compared to a water bottle with ball bearings, it does not make annoying noise when your pet drinks water. Make your pet more comfortable: our water dispensers hanging cups provide your pet with a more comfortable and hygienic water experience than traditional bottles and bowls. Fix them at the right height of the cage, they won't have to raise their necks. Protection against dust and leaks: the seals are designed to prevent water leaks and the entry of dust. Compared with large water bowls, water is not easily contaminated and does not cause mouth inflammation due to prolonged exposure of their jaws to water. </p >