The Möbius action cam is my main go to FPV / RC HD record camera. It’s small size, weight and form factor are idea for RC aircraft & multirotor applications. It also works well Velcro attached to a base ball hat to record the action hands free. You can live stream the video / audio for some FPV applications but for quad racing you should source from a low latency FPV camera.
To see some RC Pilot point of view work attaching the Mobius camera to a Base ball hat check out this video of me flying my Custom Designed Manta Ray at Dyer park in WPB