What are the differences between O4 vs O3 video transmission?

The O4 video transmission system adopts an all-new hardware solution, and a new frequency band has been added. The communication algorithm has also been upgraded, delivering FHD video transmission to an extended range of 10km (CE), and featuring enhanced anti-interference capabilities. The remote controller also supports a 1080p/60fps max real-time live feed, with the higher frame rate delivering a smoother viewing experience.