If you’re at the moment out there 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 wonderful alternative to share my ideas on the favored fashions in the marketplace, and assist others determine which quad would possibly greatest swimsuit their flying model.
Why DJI O4 Lite?
The DJI O4 Air Unit (Lite) is good 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 assessment, the Professional model is healthier in practically each side however is considerably heavier, bigger, and nearly double the value. The O4 Lite is lighter, extra compact, and simpler in your pockets in case you count on frequent crashes and repairs.
Flywoo Firefly18
Specs:
- Battery: 1S
- Prop Dimension: 45mm bi-blade
- Motor: 1002 19800KV
- Weight (with out battery): 39g
- Worth: $239.99
The place to Purchase:
The Flywoo Firefly18 might be my favourite 1S “open prop” micro drone I examined in 2025. It’s a whole lot of enjoyable to fly within the park — nimble, quiet, and straightforward to regulate. 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 a fair 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 onerous to beat this setup.
See my full assessment 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
- Worth: $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 barely 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 pleasurable and extremely really useful alternative.
Try my full assessment 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)
- Worth: $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 means of tight areas with ease, only a nice micro ripper. In comparison with the Femto, I favor this Pico 2. The bigger 45mm props give it noticeably extra thrust and effectivity, whereas the improved digital camera mount additionally eliminates jello. Regardless of being nearly the identical weight, the Pico 2 performs higher in nearly each points.
Extra impressively, it additionally helps the DJI O4 Professional air unit which makes it extremely versatile! Try my full assessment: 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
- Worth: $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, count on roughly 5 minutes of flight time. One factor to remember is the motor KV score, which feels excessive for 2-inch tri-blade props. This may 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 harm.
A major disadvantage of the Nanofly20 is its video. Sub250 mounts the DJI O4 Lite digital camera immediately inside a TPU cover with none smooth mounting. For the reason that DJI O4 digital camera 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 tough. Moreover, the quad reveals wobbling throughout aggressive maneuvers, doubtlessly as a consequence of a PID tuning difficulty or motor overload from these heavy tri-blade props.
One other level of consideration is the value tag. At $279, the Nanofly20 feels barely overpriced given its comparatively easy construct and video high quality considerations.
Total, the Nanofly20 is constructed for enjoyable and freestyle flying somewhat than cinematic work. Whereas it excels in agility and velocity 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
- Worth: $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 true deal-breaker is how Sub250 determined to energy the DJI O4 Lite immediately from the battery—a significant difficulty 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
- Worth: $249.99
The place to Purchase:
The Flywoo Flybee16 is basically the Flylens75 cinewhoop with out prop guards—I suppose that’s Flywoo’s straightforward option 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, velocity, and noise ranges.
Nevertheless, the pusher design might not be perfect for a freestyle drone that you simply fixed crash and need to take off anyplace within the area. 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 considerations since you are repeatedly touchdown/crashing on it.
On a optimistic notice, Flywoo’s technique of mounting the DJI O4 digital camera seems among the many cleanest, most dependable for Rocksteady or Gyroflow stabilization. Different methods of mounting the O4 digital camera, just like the one within the BetaFPV Meteor75 Professional, tends to provide barely extra inconsistent outcomes (though it did work nicely for me a lot of the occasions).
The Flybee16 appears to be a reasonably nimble drone for outside, it’s not probably the most highly effective drones on the market, and is extra fitted to cruising or mild freestyle flying. And it reveals noticeable prop wash throughout aggressive maneuvers.
Provided that it’s an open-prop micro quad, indoor flight or flying close to folks isn’t really useful. And on this case, would I take into account the Flylens75 with O4 Lite? Most likely not, as a result of the O4 digital camera is simply not adequate for any cinematic flying. I might somewhat get the model with bare O3 to be trustworthy, which presents superior video at related weight.
Flywoo Flybee 20 / Flylens 85
Specs:
- Battery: 2S
- Prop Dimension: 2inch 2-blade
- Motor: 1003 14800KV
- Weight (with out battery): 47.6g
- Worth: $249.99
The place to Purchase:
The Flybee20 mirrors the Flybee16 however encompasses a bigger 85mm body and 2-inch bi-blade props. The remainder of the {hardware} are an identical, together with motors. And it’s basically 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 offered barely longer flight occasions, probably as a consequence of its extra environment friendly two-blade propellers. For the reason that Flybee16 and Flybee20 are basically ductless variations of the Flylens collection, I count on related efficiency variations between the Flybee fashions as nicely. Contemplating their related 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 be the superior possibility.
Flywoo Flytimes 85
Specs:
- Battery: 2S
- Prop Dimension: 2inch 2-blade
- Motor: 1003 14800KV
- Weight (with out battery): 58.9g
- Worth: $269.99
The place to Purchase:
The Flytimes85 is basically a hybrid of the Flylens85 and Flybee20, that includes lighter prop guards for decreased weight and a few stage of propeller safety. Its weight falls between these two fashions, whereas different specs stay an identical.
Until you particularly require propeller safety, I’d advocate the Flybee20 for out of doors freestyle flying. The Flytimes85 would possibly swimsuit 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 giant and highly effective for flying in the home for my part. Moreover, the DJI O4’s video high quality isn’t ample for cinematic functions. If cinematic footage is your aim, take into account upgrading to the DJI O4 Professional.
GEPRC T-Cube18
Specs:
- Worth: $269.99
- Battery: 2S
- Prop Dimension: 45mm 3-blade
- Motor: 1002 18000KV
- Weight (with out battery): 50g
The place to Purchase:
It is a new providing, and there isn’t a lot data obtainable on-line but moreover the specs. Let’s take a better 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 larger motors and propellers. Whereas the motors are smaller, they compensate with a really excessive KV score of 18000KV, nevertheless that could be a little excessive and raises considerations about effectivity and potential motor overheating.
The body design is tanky and seems crash-resistant. It additionally retains the props out of the digital camera view, stopping them from showing in your footage. Nevertheless, I nonetheless assume the load 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
- Worth: $199.99
The place to Purchase:
I actually loved flying this whoop indoors—it’s most likely my favourite 1S whoop outfitted with the DJI O4 in the meanwhile. I received’t go into an excessive amount of element right here since I’ve written an entire assessment 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
- Worth: $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 as a consequence of its heavier weight. The smaller props imply that the motors need to work more durable (spinning at greater 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 higher uncooked efficiency and responsiveness.
Whereas the Femto’s enhanced energy is interesting for out of doors flying in calm circumstances, it’s in a clumsy place. For indoor flying, I nonetheless assume the Meteor75 Professional presents superior dealing with. Outside, 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. Try my assessment to be taught 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 a level getting the Femto to be completely trustworthy.
HappyModel Mobula7 O4
Specs:
- Battery: 2S
- Prop Dimension: 45mm 3-blade
- Motor: 1102 10000KV
- Weight (with out battery): 38.2g
- Worth: $272.99
The place to Purchase:
The Mobula7 O4 presents an fascinating setup. It’s basically 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 related 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 not less than double—and certain even heavier as a result of 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 mild body, it lacks ample energy for critical out of doors freestyle, which is anticipated from a tiny whoop of this dimension. You’ll be able to fly it outside, however solely in calm circumstances, and also you shouldn’t anticipate distinctive freestyle capabilities.
For me the first disadvantage is video high quality, which reveals noticeable jello and vibration—even earlier than any stabilization is utilized. This doubtless stems from the digital camera being mounted immediately inside the cover with out vibration isolation. One other draw back is that the digital camera angle doesn’t seem like adjustable.
Conclusion – Which is the Finest DJI O4 Micro Drone?
2S or 1S for DJI O4?
A 2S setup is actually the candy spot for the DJI O4 Air Unit as a result of it may be powered immediately from the battery, simplifying the construct considerably. In distinction, a 1S setup requires powering the O4 through 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 strong 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 best choice is the Meteor75 Professional. Personally, a light-weight 1S setup is good 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. Some pilots dislike the digital camera smooth mounting on the Meteor75 Professional, believing it introduces jello in footage. Nevertheless, in my expertise, it labored completely nice, so the precise reason behind their difficulty stays unclear.
Get the Meteor75 Professional right here:
One other good possibility is the Mobula7 O4, however it’s a 2S drone, and also you’ll want to think about in case your area comfortably accommodates its additional 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 Flywoo Firefly18 – it’s quiet and stealthy. If you would like a bit extra wind resistance and extra energy, take into account 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 obtainable, however it’s greater than succesful for informal freestyle flying in your native small parks.
Get the Firefly18 right here:
Get the Flywoo Flybee 20 right here:
If you would like a whoop (prop guard), the Pavo Pico 2 is a superb possibility.
The place to Purchase:
For each Indoor and Outside?
When you’re in search of 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 somewhat than settling for mediocrity in each. As an illustration, whereas the Meteor75 Professional may also deal with out of doors flying beneath 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.
