This lightweight air unit supports up to 4K/60FPS onboard recording in a lightweight form factor. The recording quality is a huge step forward for micro quads which cannot carry a Naked GoPro. The voltage range (2-3S) is quite limiting if you don't use a flight controller with an onboard BEC to provide power although there are even some 1S FCs now that include a step up voltage regulator for O4! This is the first time a DJI has released a compelling VTX for toothpick and micro drones and in many ways that makes this more important than the O4 Pro for sub250g pilots.

1.6W of output power in a compact package makes this analog VTX suitable for 5"+ drones. At maximum output you can get excellent range with a quality omnidirectional antenna on the drone and high gain antennas on goggles/ground station

The top of the line Walksnail Avatar VTX. Onboard 4k60 recording and 1080p60 or 720p100 video in the goggles. The image quality is not as good as DJI O3 but the price is much more reasonable and this camera does better in low light.

Slightly heavier than the Naked O3 Ultra this version is slightly cheaper and retains the shielding cans on the air unit for slightly better durability. You can remove these manually if you wish to get down to the same weight as the Ultra for a little less coin.

DJI latest Air unit supports onboard recording up to 4K/120fps at 100 MBps a 155 degree FOV and a large 1/1.3" sensor for even better fidelity and visual quality. As with all DJI Air units the price point is quite high but the overall user experience is very good. The camera has a strange mounting pattern which does not fit all FPV frames, make sure you check out the V5 versions of AOS frames which support DJI O4 Pro. If the quality of the onboard recording is critical for you this will be a worthwhile upgrade over O3. If not then you may want to stick with the O3 system for now.

Don't let the name fool you this VTX is not for whoops! With a maximum output power of 2.5W this VTX will give you solid analog video out to extreme range when paired with a quality omni antenna on the drone and high gain receiving antennas on goggles or a ground station. The integrated fan helps prevent the VTX overheating before takeoff.

If you're a racer then HDZero is the HD system for you and this VTX is designed for 3" and 5" racing quads. Make sure to use a flight controller with at least a 5V 1.5A / 9V 1A /12V 1A BEC. This VTX cannot be powered from battery voltages above 2S.

If you want O3 at the lightest possible weight this is it. All the O3 features you love in an ultralight form factor. This can be suitable for quads with props as small as 2". Just like Porsche the less it weighs the more you pay! Also consider buying the Naked O3 Lite and removing the shielding cans yourself.

5W of output power for the maximum possible range on 5.8GHz. Foxeer also do a 10W version (only available direct from Foxeer). It supports up to 8S input voltage and has a 5V output for the camera. It's not legal to output more than 1W from a drone in the USA so bear that in mind.

The Avatar GT VTX delivers a ridiculous 2W of EIRP output power across 2 antennas. This is the most powerful Avatar VTX to date and is perfect if you're looking to fly long range or need a VTX with the power to punch through obstructions to give you clear video.

Foxeer made a HDZero Race VTX! I actually prefer the specs of this VTX to the HDZero one because it can be powered from up to 6S LiPo voltage! Everything else is the same as the HDZero Race V3.

True 1W output power for the HDZero system just got better. The smaller 30x30x14 mm form factor and 20mm M2 mounting pattern make this VTX perfect for 3" - 5" Freestyle drones and pilots who want the lowest possible latency of any FPV system available today. De-cased the VTX can be used on Lightweight 3" builds.