[DETAIL] 1.This product has mini built-in generating electricity devices, no need of batteries, as long as the water flow it will give out light,? turn off the water, the light goes out immediately. 2.The product has excellent water conservation function, and connected at the top with the water-saving filter 3.Trouble shooting steps: If The water pressure is too low Clean or replace the aerator If Water is leaking from the faucet under the sink Check the water supply connections to the faucet.If LED does not illuminate check the plug connection [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - Type: Aerators - Hign-concerned Chemical: None - Origin: Mainland China - Type: Aerators - Certification: Dot,EPA,weee,UL,CE