Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System 5mm jack functions as a

5mm jack functions as a headphone output for monitoring the live signal or playback from your host device

Compatible with GoPro Supercharger

You also have access to the charging port and charging port release button with the Wi-Fi Remote is in the Arm Band

it automatically gives you a strong signal no matter the scenario

and in-app permissions

Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System 5mm jack functions as aHigh Definition Video Transmission The Cosmo C1 SDI HDMI Wireless Video Transmission System from Hollyland allows you to wirelessly transmit high resolution video up to 1080p60 over long distances up to 1000' to a single receiver, allowing flexible video monitoring and distribution for your studio or field production. This kit consists of a transmitter and a receiver that communicate over the 5. 1 to 5. 9 GHz wireless frequency range. Solid, Secure