Silent Water Pump: The 40DB silent water pump will not disturb you while doing its job with automatic power off. 2.5L large water holding capacity. LED Night Mode: Observe the water level at night to adapt to the environment. Safety and Energy Saving: Made of food-grade safe material. The stable base holds the fountain in place. The USB interface can be connected to the charger with safe 5V output low voltage. Quadruple Filtration: The multiple depth purification filtration can improve water softening and quality. With the circulation filtration your pet can enjoy healthy living water.