Nikon Z 9 Reference Manual page 822

Radio-controlled Advanced Wireless Lighting
Color Information Communication (flash)
Color Information Communication (LED light)
Auto FP high-speed sync
FV lock
Red-eye reduction
Camera modeling illumination
Unified flash control
Camera flash unit firmware update
1 Not available with spot metering.
2 Available only in i-TTL, GN, and M flash-control modes.
3 Available only in i-TTL flash-control mode.
Compatible Flash Units
822
Supported features
—
4
—
4
2
4
3
4
4
—
4