DJI has just released the new O4 Air Unit and O4 Air Unit Pro – a low-weight device (just 8.2g) which includes camera and transmission system for digital video designed for FPV video from drones.

Well, thankfully, there are alternatives available. If you're on the lookout for a sub-250g drone for travel and the DJI Mini 4K has been recommend to you, fret not. You may like I tested this 8K ...