In case you are presently available in the market for a brand new micro FPV drone that includes the DJI O4 Lite Air Unit, this submit is for you! Whether or not it’s a tiny whoop or open-prop 1.6-inch or 2-inch ultralight toothpick quad, I assumed this might be a superb alternative to share my ideas on the favored fashions available on the market, and assist others determine which quad would possibly finest go well with their flying type.
Why DJI O4 Lite?
The DJI O4 Air Unit (Lite) is right for micro FPV drones if professional-grade footage isn’t your precedence and also you’re flying primarily for enjoyable. As talked about in my DJI O4 Professional overview, the Professional model is best in almost each facet however is considerably heavier, bigger, and virtually double the worth. The O4 Lite is lighter, extra compact, and simpler in your pockets if you happen to anticipate frequent crashes and repairs.
Flywoo Firefly18
Specs:
- Battery: 1S
- Prop Dimension: 45mm bi-blade
- Motor: 1002 19800KV
- Weight (with out battery): 39g
- Value: $239.99
The place to Purchase:
The Flywoo Firefly18 might be my favourite 1S “open prop” micro drone I examined in 2025. It’s lots of enjoyable to fly within the park — nimble, quiet, and straightforward to manage. The spotlight of this drone is the wide-angle lens (additionally made by Flywoo). It really transforms the DJI O4 expertise, delivering extra immersive footage and making this drone an excellent higher worth for content material creators and cinematic flyers. It’s not the lightest or most aggressive performer in its class, but when your precedence is stabilized 4K video from a 1S quad that also flies nicely, it’s arduous to beat this setup.
See my full overview of this drone right here: https://oscarliang.com/flywoo-firefly18-o4/
WalleFPV Eagle2
Specs:
- Battery: 3S
- Prop Dimension: 1.6inch 3-blade
- Motor: 1002
- Weight (with out battery): 72g
- Value: $224 (PNP)
The place to Purchase:
If you would like the smallest drone designed for the DJI O4 Professional Air Unit, that is the one I’d advocate. The WalleFPV Eagle2 is a formidable little drone that delivers big-drone efficiency in an extremely compact kind issue. It makes use of 1.6-inch propellers, and with the battery the takeoff weight is just 106g!
For a palm-sized FPV drone, it’s surprisingly agile and enjoyable to fly — good for cruising round native parks or your yard. The Eagle2 is a very fulfilling and extremely really useful selection.
Take a look at my full overview right here: https://oscarliang.com/ymzfpv-eagle2-o4-pro/
BetaFPV Pavo Pico 2
Specs:
- Battery: 2S
- Prop Dimension: 45mm 3-blade
- Motor: 1102 14000KV
- Weight (with out battery): 54g (with O4)
- Value: $104.99 (PNP)
The place to Purchase:
I actually take pleasure in flying the Pavo Pico 2, it really shines with the lighter DJI O4 Lite – it’s quick, enjoyable, and able to weaving by way of tight areas with ease, only a nice micro ripper. In comparison with the Femto, I desire this Pico 2. The bigger 45mm props give it noticeably extra thrust and effectivity, whereas the improved digicam mount additionally eliminates jello. Regardless of being virtually the identical weight, the Pico 2 performs higher in virtually each points.
Extra impressively, it additionally helps the DJI O4 Professional air unit which makes it extremely versatile! Take a look at my full overview: https://oscarliang.com/betafpv-pavo-pico-ii/
Sub250 Nanofly20
Specs:
- Battery: 2S
- Prop Dimension: 2inch tri-blade
- Motor: 1002 14000KV (not the advertized 21000KV)
- Weight (with out battery): 42g
- Value: $279.99
The place to Purchase:
The Sub250 Nanofly20 is an open-prop drone designed for open areas. Open-prop drones are typically quieter, extra environment friendly, quicker, and considerably extra responsive than whoop drones with propeller guards. With a typical 2S 550mAh battery, anticipate roughly 5 minutes of flight time. One factor to bear in mind is the motor KV ranking, which feels excessive for 2-inch tri-blade props. This could result in hotter motors if pushed aggressively. Be cautious when adjusting the grasp slider in your PID tuning settings to keep away from overheating or injury.
A major downside of the Nanofly20 is its video. Sub250 mounts the DJI O4 Lite digicam straight inside a TPU cover with none mushy mounting. For the reason that DJI O4 digicam is delicate to vibrations, you’ll discover appreciable jello and shakiness within the goggles. Though it data in 4K, the gyro information is simply too noisy for dependable stabilization, making cinematic footage troublesome. Moreover, the quad displays wobbling throughout aggressive maneuvers, probably attributable to a PID tuning problem or motor overload from these heavy tri-blade props.
One other level of consideration is the worth tag. At $279, the Nanofly20 feels barely overpriced given its comparatively easy construct and video high quality issues.
Total, the Nanofly20 is constructed for enjoyable and freestyle flying slightly than cinematic work. Whereas it excels in agility and pace for park flying, the noticeable vibration, jello, and excessive price ticket make it a difficult suggestion.
Sub250 Nimble65
Specs:
- Battery: 1S
- Prop Dimension: 65mm Tri-blade
- Motor: 0702 27000KV
- Weight (with out battery): 27g
- Value: $229.99
The place to Purchase:
I can’t advocate this mannequin.
The motor and prop mixture is severely underpowered for a digital construct that weighs 27 grams. Anticipate sluggish efficiency, poor responsiveness, and an general unenjoyable flight expertise.
The actual deal-breaker is how Sub250 determined to energy the DJI O4 Lite straight from the battery—a serious problem for 1S O4 builds. As I’ve repeatedly emphasised in my weblog posts, the DJI O4 Lite struggles when enter voltage drops beneath 3.7V, leading to unstable video and even full lack of sign. A correct 5V BEC ought to have been used to make sure constant energy for the O4 all through the flight. Sub250 clearly rushed their DJI O4 releases this time, and the Nimble65 is proof of that.
Flywoo Flybee 16/Flylens 75
Specs:
- Battery: 2S
- Prop Dimension: 40mm (1.6inch) 3-blade
- Motor: 1003 14800KV
- Weight (with out battery): 45.7g
- Value: $249.99
The place to Purchase:
The Flywoo Flybee16 is basically the Flylens75 cinewhoop with out prop guards—I assume that’s Flywoo’s straightforward approach to making a brand new mannequin and not using a full redesign. As anticipated, eradicating the prop guard reduces weight by over 10 grams, enhancing flight efficiency, effectivity, pace, and noise ranges.
Nevertheless, the pusher design is probably not best for a freestyle drone that you simply fixed crash and should take off anyplace within the discipline. The props are so uncovered and near the bottom it complicates takeoffs and landings, significantly when utilizing turtle mode, as props can simply get caught by grass or particles. Moreover, putting the O4 Air Unit on the underside, even with protecting plastic, raises sturdiness issues since you are repeatedly touchdown/crashing on it.
On a optimistic observe, Flywoo’s technique of mounting the DJI O4 digicam seems among the many cleanest, most dependable for Rocksteady or Gyroflow stabilization. Different methods of mounting the O4 digicam, just like the one within the BetaFPV Meteor75 Professional, tends to supply barely extra inconsistent outcomes (though it did work nicely for me a lot of the instances).
The Flybee16 appears to be a fairly nimble drone for outside, it’s not essentially the most highly effective drones on the market, and is extra suited to cruising or gentle freestyle flying. And it displays noticeable prop wash throughout aggressive maneuvers.
Provided that it’s an open-prop micro quad, indoor flight or flying close to individuals isn’t really useful. And on this case, would I contemplate the Flylens75 with O4 Lite? In all probability not, as a result of the O4 digicam is simply not ok for any cinematic flying. I might slightly get the model with bare O3 to be sincere, which provides superior video at comparable weight.
Flywoo Flybee 20 / Flylens 85
Specs:
- Battery: 2S
- Prop Dimension: 2inch 2-blade
- Motor: 1003 14800KV
- Weight (with out battery): 47.6g
- Value: $249.99
The place to Purchase:
The Flybee20 mirrors the Flybee16 however includes a bigger 85mm body and 2-inch bi-blade props. The remainder of the {hardware} are equivalent, together with motors. And it’s primarily a ductless Flylens85, over 20g lighter, providing means higher flight time and efficiency.
I beforehand reviewed each the Flylens75 and Flylens85, and I most popular the Flylens85. The bigger Flylens85 merely flew higher for me and supplied barely longer flight instances, probably attributable to its extra environment friendly two-blade propellers. For the reason that Flybee16 and Flybee20 are primarily ductless variations of the Flylens sequence, I anticipate comparable efficiency variations between the Flybee fashions as nicely. Contemplating their comparable weights, I’d go for the mannequin with bigger props any day.
Between the Flybee16 and Flybee20, the Flybee20 is the higher general drone. Likewise, between the Flylens75 and Flylens85, the Flylens85 can also be the superior choice.
Flywoo Flytimes 85
Specs:
- Battery: 2S
- Prop Dimension: 2inch 2-blade
- Motor: 1003 14800KV
- Weight (with out battery): 58.9g
- Value: $269.99
The place to Purchase:
The Flytimes85 is basically a hybrid of the Flylens85 and Flybee20, that includes lighter prop guards for diminished weight and a few stage of propeller safety. Its weight falls between these two fashions, whereas different specs stay equivalent.
Except you particularly require propeller safety, I’d advocate the Flybee20 for out of doors freestyle flying. The Flytimes85 would possibly go well with combined flying environments the place you continuously transition between indoor and out of doors areas. Nevertheless, realistically, a 2S 2-inch whoop is barely too massive and highly effective for flying in the home in my view. Moreover, the DJI O4’s video high quality isn’t adequate for cinematic functions. If cinematic footage is your purpose, contemplate upgrading to the DJI O4 Professional.
GEPRC T-Cube18
Specs:
- Value: $269.99
- Battery: 2S
- Prop Dimension: 45mm 3-blade
- Motor: 1002 18000KV
- Weight (with out battery): 50g
The place to Purchase:
This can be a new providing, and there isn’t a lot info accessible on-line but moreover the specs. Let’s take a more in-depth take a look at that.
The very first thing that stands out to me is how heavy the T-Cube18 is for an open-prop micro quad. It’s 2.5g heavier than the Flybee20 which even has greater motors and propellers. Whereas the motors are smaller, they compensate with a really excessive KV ranking of 18000KV, nevertheless that could be a little excessive and raises issues about effectivity and potential motor overheating.
The body design is tanky and seems crash-resistant. It additionally retains the props out of the digicam view, stopping them from showing in your footage. Nevertheless, I nonetheless suppose the burden is a bit extreme for my liking given these tiny props. Moreover, its value of $269.99 feels barely excessive IMO.
BetaFPV Meteor75 Professional
Specs:
- Battery: 1S
- Prop Dimension: 45mm tri-blade
- Motor: 1102 22000KV
- Weight (with out battery): 37.2g
- Value: $199.99
The place to Purchase:
I actually loved flying this whoop indoors, however some individuals report jello points with the digicam mount though I personally didn’t get that with mine. I received’t go into an excessive amount of element right here since I’ve written an entire overview you may take a look at: https://oscarliang.com/betafpv-meteor75-pro-o4-whoop/
BetaFPV Pavo Femto
Specs:
- Battery: 2S
- Prop Dimension: 40mm 3-blade
- Motor: 1102 14000KV
- Weight (with out battery): 54.8g
- Value: $224.99
The place to Purchase:
The Femto, powered by a 2S battery, is extra highly effective than the1S Meteor75 Professional and might deal with stronger winds outside. Nevertheless, this elevated energy comes with trade-offs: the Femto is noisier and fewer agile indoors attributable to its heavier weight. The smaller props imply that the motors should work more durable (spinning at increased RPM) to maintain the drone afloat in comparison with the Meteor75 Professional, making it louder and considerably much less environment friendly. On the flip aspect, the quicker RPM response interprets to better uncooked efficiency and responsiveness.
Whereas the Femto’s enhanced energy is interesting for out of doors flying in calm circumstances, it’s in an ungainly place. For indoor flying, I nonetheless suppose the Meteor75 Professional provides superior dealing with. Open air, the Femto flies nicely, solely when the climate is calm; as quickly because the wind picks up, I begin to discover some wobble and jello within the footage, and the drone might be pushed round extra simply than bigger fashions. Take a look at my overview to study extra: https://oscarliang.com/betafpv-pavo-femto/
The newer Pavo Pico 2 is simply an general higher drone than the Femto – extra highly effective, environment friendly with out jello. That’s why there isn’t any level getting the Femto to be completely sincere.
HappyModel Mobula7 O4
Specs:
- Battery: 2S
- Prop Dimension: 45mm 3-blade
- Motor: 1102 10000KV
- Weight (with out battery): 38.2g
- Value: $272.99
The place to Purchase:
The Mobula7 O4 presents an fascinating setup. It’s primarily in the identical class because the 1S BetaFPV Meteor75 Professional regardless of being 2S. That’s as a result of its motor KV is lower than half that of the Meteor75, and so they have the identical prop dimension, the motor RPM can be comparable since RPM=KV*voltage. Their weights (with out batteries) are additionally fairly shut.
Nevertheless, keep in mind that 2S batteries have two cells, making the battery weight at the very least double—and sure even heavier because of the XT30 connector in comparison with BT2.0. This elevated battery weight considerably raises the takeoff weight, affecting general flight efficiency.
By way of precise flight efficiency, the Mobula7 O4 seems to fly nicely, each agile and steady. But, regardless of its gentle body, it lacks adequate energy for severe out of doors freestyle, which is predicted from a tiny whoop of this dimension. You may fly it outside, however solely in calm circumstances, and also you shouldn’t anticipate distinctive freestyle capabilities.
For me the first downside is video high quality, which exhibits noticeable jello and vibration—even earlier than any stabilization is utilized. This seemingly stems from the digicam being mounted straight inside the cover with out vibration isolation. One other draw back is that the digicam angle doesn’t look like adjustable.
Conclusion – Which is the Greatest DJI O4 Micro Drone?
2S or 1S for DJI O4?
A 2S setup is absolutely the candy spot for the DJI O4 Air Unit as a result of it may be powered straight from the battery, simplifying the construct considerably. In distinction, a 1S setup requires powering the O4 by way of a BEC or devoted voltage regulator to make sure reliability. At present, most 1S AIO flight controllers lack a sufficiently highly effective 5V BEC, that means producers should develop new flight controllers particularly outfitted with sturdy BECs. As of now, BetaFPV is among the many few producers offering this selection (specifically the 3in1 Matrix FC board).
For Indoor Flying
For indoor flying, my high selections are the Flywoo Firefly18 and BetaFPV Meteor75 Professional. Personally, a light-weight 1S setup is right indoors—2S drones really feel too heavy and too highly effective for comfy flying in the home. The 1S batteries are additionally cheaper, simpler to cost, and the setup produces much less noise general.
I feel the Firefly18 is a little more versatile – you may set up the prop guard for indoor flights, or take away them if you would like extra energy and flight time in outside (however it’s lots of work putting in/eradicating these prop guards). The Meteor75 Professional can even fly out of doors too however it’s much less highly effective than the Firefly18. Additionally some pilots dislike the digicam mushy mounting on the Meteor75 Professional, believing it introduces jello in footage.
Get the Firefly18 right here:
Get the Meteor75 Professional right here:
One other good choice is the Mobula7 O4, however it’s a 2S drone, and also you’ll want to contemplate in case your area comfortably accommodates its further energy and weight. Though extra highly effective than the Meteor75 Professional, if you end up flying at solely 30-40% throttle, the lighter and cheaper Meteor75 Professional makes extra sense, particularly given the Mobula7 prices $73 extra.
Get the Mobula7 O4 right here:
For Outside Flying
For out of doors use my suggestion can be the Flybee20. Whereas I’m not an enormous fan of its inverted design, it delivers clear and jello free video. Flight efficiency additionally appears to be stable; it’s not absolutely the strongest 2-inch quad accessible, however it’s greater than succesful for informal freestyle flying in your native small parks. If you would like a extra quiet and safer choice, contemplate the Flywoo Firefly18, however as a result of it runs on 1S, it’s much less wind resistant and fewer highly effective than the 2S choices.
Get the Flywoo Flybee 20 right here:
If you would like a whoop (prop guard), the Pavo Pico 2 is a superb choice for out of doors.
The place to Purchase:
For each Indoor and Outside?
Should you’re searching for one thing versatile sufficient for each indoor and out of doors flying, it must be a whoop in fact. Many choices just like the Happymodel Mobula7, BetaFPV Femto, and Flylens85 are all succesful—however they don’t excel at both class. I extremely advocate selecting a drone that excels in a single atmosphere slightly than settling for mediocrity in each. For example, whereas the Meteor75 Professional can even deal with out of doors flying underneath calm circumstances, it’s slower than 2S quads and higher suited as an indoor whoop.
Edit Historical past
- March 2025 – article printed.
- Oct 2025 – added 3 extra choices and up to date suggestions.