product 1.The unique replaceable design filter can effectively filtrate the hair, odor, and chlorine. Consequently, the fountain can give cleaner water to pets and reduce the risk of developing illness. Charcoal filter help remove which absorbs odors and bad taste. 2.The unique designed pump is deployed with customized suction cup to diminish the noise to a minimum. High quality impeller can guarantee durable products for using. 3.Pet fountain is made of finely polished antibacterial PP plastic and Stainless Steel lid, eco-friendly, nontoxic, odorless and durable. Simple quick-release structure is designed for easy removal and cleaning. 4.No need to replenish water frequently, and it can meet the drinking needs of cats, dogs, birds and other pets of various sizes. No need to worry about your pets not getting enough fresh drink when you go to work. 5.Equipped with LED, which you can see the water level. When working, the LED is blue. The product does not work until the water level exceeds the pump. Powered by USB cable. Safe, hygienic, convenient top-shelf dishwasher safe.