The Hollyland Mars 300 Pro HDMI Wireless Video Transmitter is a lightweight and compact video transmitter set from Hollyland. It has a range of 120 meters, 90 meters with the app. The receiver has two HDMI outputs and the transmitter has an HDMI loopout. The menu is simple and it has a latency of only 0.1s. The video transmitter runs on NP-F batteries and supports those video formats : 1080p at 23.98, 24, 25, 29.97, 30, 50, 59.94, 60 fps; 1080i at 50, 59.94, 60 fps; 720p at 50, 59.94, 60 fps; 576p at 50 fps and 480p at 60 fps.

Finally, the transmitters individually weigh 136g.