The Hansgrohe Rebris S single lever bidet mixer has a metal pop-up waste set. It has EcoSmart technology to save water and energy.
 It mixes air into the water to make the droplets lighter and less splashy.
 It also mixes hot and cold water to the desired temperature.
The Rebris S bidet mixer consumes a maximum of 5 liters per minute.
Here are some other Hansgrohe bidet faucets:
Hansgrohe Talis Select S: Has a Select handle to activate and pause the water jet
Hansgrohe Rebris E: Has a plastic waste set
Hansgrohe 31920001 Focus: A 5-inch tall bidet faucet