Bought but never used (I no longer own the flash). Paid $148.90 for it.

Works with X Wireless Radio System Compatible with Nikon i-TTL Frequency: 2.4 GHz Range: 328' 32 Channels; 16 Groups; Wireless ID Remote Power Control for Select Flashes Backlit LCD Panel High-Speed, 1st & 2nd Curtain Sync 2.5mm Sync Port; USB Type-C Port Runs on Two AA Batteries

Using the 2.4 GHz Godox X wireless radio system, the XProN TTL Wireless Flash Trigger can be used to effectively and reliably trigger flashes from up to 328' away, and when used with compatible flashes and receivers users will have the added benefit of remote power control. This model is compatible with Nikon's i-TTL system, including support for high-speed sync up to 1/8000 second, and offers advanced control options along with settings for working with system-specific features. For ensuring maximum reliability and control, users can set up 16 groups on one of 32 channels and can then access 99 wireless ID settings for limiting interference from other nearby systems. In addition to basic manual and TTL control modes, other settings are available, including stroboscopic flash and second-curtain sync. Users can adjust flash exposure compensation from -3 to +3 EV as well as wirelessly control the modeling light, zoom setting, and more. For using the XProN with other camera systems there is a 2.5mm sync port that supports triggering via a wired connection. Also, a USB Type-C port is present for firmware updates and the devices run on two AA batteries for convenience.