The device features a new 1.4-inch front colour display with live preview and status modes, a larger 2.27-inch rear touch display with touch zoom.
"The HERO9 Black featuring "more everything", includes a new 23.6-megapixel sensor that delivers 5K video and 20-megapixel photos, next-generation HyperSmooth 3.0 video stabilization with in-camera horizon leveling, a new front-facing display, a larger rear display, and 30 percent more battery life," the company said in a statement.
The GoPro 9 Black is waterproof up to 10 meters and also supports a single microSD and charges via USB Type-C.
The HERO9 Black-compatible Mods also include the Media Mod for HERO9 Black -- now with a removable foam windscreen -- Display Mod and Light Mod.
Other features of the Hero 9 Black include HyperSmooth 3.0 with in-camera horizon leveling, HindSight, LiveBurst, Scheduled Capture and Duration Capture. It features a removable lens cover and a larger speaker for improved audio playback.
It also supports voice control with 14 commands in 11 languages and six accents along with three microphones with advanced wind-noise reduction.