The PetSafe® Drinkwell® 3.7 Liter Pet Fountain features a free-falling stream of water with adjustable flow control. You can adjust the water flow to better suit your animals' needs with the dial. Decrease or stop the flow for quiet operation. Features: Drinkwell water fountain with a capacity of 3.7 liters for medium or small dogs. The constant circulation of water encourages animals to drink and prevents the development of bacteria. Flow adjustment dial lets you customize the flow or turn it off for quiet operation Water is filtered with a foam filter (replaceable) that captures hair and debris and a charcoal filter (replaceable) that removes the bad taste and odors of the water. Receiving ramp reduces splashing from falling water Easy to clean, bowl disassembles and is dishwasher safe Submersible pump with in-line plug, for easy plugging in and out Handles on side of bowl for ease transportation and positioning 12V low voltage system is safe and energy efficient Directions for use: Clean your fountain pump every 2-4 weeks depending on water quality. + 0.12 € eco share