www.supplyht.com/articles/99460-sloan-turbine-powered-faucet

The new power-harvesting, touchless BASYS faucet from Sloan features turbine technology that generates hydroelectric power, extending faucet battery life up to 10 years.
Sloan turbine-powered faucet
The new power-harvesting, touchless BASYS faucet from Sloan features turbine technology that generates hydroelectric power.
May 23, 2016
The new power-harvesting, touchless BASYS faucet from Sloan features turbine technology that generates hydroelectric power, extending faucet battery life up to 10 years. A miniature turbine fits inside the faucet spout, eliminating any under-sink or water-supply stop attachments. Installation is simple, and the faucet is available in high-, medium- and low-spout styles. The faucet uses regular AA batteries and comes standard with battery backup to ensure optimal water delivery. Options include a side-mounted mixing valve for temperature adjustments.