Water saving B; Japan Industrial Standard Product; Comfortable and safe: Reduces the phenomenon of overshoot when the shower is stopped. Safe to Touch: Creates an air layer between the body to prevent heat dissipation on the surface. You can use it with peace of mind knowing that it will not be hot even if it accidentally touches it. Reduces pulsating phenomenons: This reduces unpleasant phenomenon that the water discharge is intermittent while using the shower. Trash prevention construction: The structure prevents debris from adhering to the cartridge, so it maintains comfortable temperature regulation for a long time.