It is a fantastic tool, uses the Sony Action Cam. Its optical set is the best miniature camera on the market: Carl Zeiss optics, Exmor R Sensor, and Bionz Processor.
It can work with three different interaxial distances, which combines it into an all-terrain camera.
Its size and weight make it an easy tool to transport and ready to work in a few seconds.
It is one of my best designs.