Two devices in a foam packaging insert:
RX (Receiver) on the left
TX (Transmitter) on the right
Both units are labeled "HDMI Wireless".
The TX unit has a male HDMI connector that plugs into a video source (such as a laptop, PC, gaming console, or media player).
The RX unit has a male HDMI connector that plugs into a display device (such as a TV, monitor, or projector).
Both units appear to be compact HDMI dongles with black plastic housings