Intelligent pump with indicator light: The pump is silent (below 30 dB). Low voltage pump usually lasts 3-4 years. Observe the water level through the window, when the water level is too low, it will change from blue to red. Automatic shut-off pump for protection against dry running. Large 3 liter capacity: It has a water capacity of 3 liters, which means it is ideal for small animals and medium size. The circulation system helps provide healthy and hygienic water to beloved pets all day. Two Flowing Designs: The pet fountain has two modes, drinking faucet and gentle fountain. They attract pets' attention and encourage them to drink water more often. Filtered water: 3-layer filter, the sponge can catch cats' hair and debris, the layer of ion exchange resin can soften tap water, the third layer of activated carbon can eliminate bad taste and odor which provides fresh and clean water for pets. Material Environmentally friendly: this fountain does not come with an adapter, The cable length is 1.2M. The pet fountain made of high quality non-toxic and odorless plastic material. A simple quick-release structure is designed for easy removal and cleaning.