What is SRAM’s wireless hydraulic disc brake groupset called?

SRAM RED® eTap® HRD. The braking platform utilized by RED® eTap® HRD is called HydroHC™ and features a new seal, piston, and reservoir architecture compared to our HydroR™ brake platform.  The RED eTap version of the HydroHC platform offers increased adjustability with both Contact Point Adjustment™ and Reach Adjustment™.