FUNCTIONS AND CHARACTERS: 1. Watersaving: Water flows out as soon as it senses the approaching of your hands. It turns off automatically when your hands leave the faucet. 2. Hygienic: There's no need to touch the faucet. The procedure is performed automatically. It is convenient, hygienic and thus avoids bacteria infection. 3. Intelligent: The induction circuit is integrated into the faucet. It can adjust induction zone automatically according to the size of washstand and its working condition. It also turns off when it is used over one minute. 4. Power saving: With four AA alkaline batteries, it can be used for two year, suppose 200 times a day, (please note the batteries must be produced by standard factories, and comes out less than six months) 5. Convenient to maintain; The inside strainer can stop the solid substances such as sand and stones. 6. Automatic adjustment; It can adjust induction zone automatically According to the size of washstand and its working condition 7. Power optional: There are three options: AC, DC, AC/DC. The AC power Can be used worldwidely