GoPro Media Mod (HERO11 Black/HERO10 Black/HERO9 Black) – Official GoPro

Tough, weather-resistant construction withstands the elements
2 cold-shoe mounts to attach your favorite lights, mics or LCD screens
3.5mm mic port lets you add an external mic for enhanced audio
HDMI-out port to monitor or play back your footage
Unique and compact wraparound design adds portable expandability and ensures mounting remains easy
Specially designed for use with GoPro Light Mod and Display Mod, and compatible third-party accessories