... turn on,auto-stop in 2-10 seconds-no battery needed and electrical power drive.Totally DIY,water-saving 87% Description ... on, auto-stop in 2-10 seonds. no battery needed and electrical power drive. Comparing with sensor faucet, our faucet is pure machanical ... sturcture2. Hygienic ,Our aerator was placed at the faucet spout. When water running, it can self-rinse which prevent from infection ...