In case you are at the moment out there for a brand new micro FPV drone that includes the DJI O4 Lite Air Unit, this put up 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 could be a wonderful alternative to share my ideas on the favored fashions in the marketplace, and assist others resolve which quad would possibly greatest swimsuit 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 evaluate, the Professional model is healthier in almost each facet however is considerably heavier, bigger, and virtually double the value. The O4 Lite is lighter, extra compact, and simpler in your pockets for those who 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 loads 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 a good 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 properly, it’s onerous to beat this setup.
See my full evaluate 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 need the smallest drone designed for the DJI O4 Professional Air Unit, that is the one I’d advocate. The WalleFPV Eagle2 is a powerful little drone that delivers big-drone efficiency in an extremely compact type issue. It makes use of 1.6-inch propellers, and with the battery the takeoff weight is simply 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 pleasant and extremely beneficial selection.
Try my full evaluate 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 via tight areas with ease, only a nice micro ripper. In comparison with the Femto, I want 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 virtually the identical weight, the Pico 2 performs higher in virtually each features.
Extra impressively, it additionally helps the DJI O4 Professional air unit which makes it extremely versatile! Try my full evaluate: 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 usually 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 score, which feels excessive for 2-inch tri-blade props. This will 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 digital camera straight inside a TPU cover with none delicate 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 knowledge is just too noisy for dependable stabilization, making cinematic footage tough. Moreover, the quad displays wobbling throughout aggressive maneuvers, doubtlessly as a result of a PID tuning subject 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.
General, the Nanofly20 is constructed for enjoyable and freestyle flying quite 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 advice.
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 not 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 total unenjoyable flight expertise.
The actual deal-breaker is how Sub250 determined to energy the DJI O4 Lite straight from the battery—a significant subject 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 simple technique 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 will not be perfect for a freestyle drone that you simply fixed crash and should take off anyplace within the subject. 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, inserting the O4 Air Unit on the underside, even with protecting plastic, raises sturdiness considerations since you are repeatedly touchdown/crashing on it.
On a constructive be aware, 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 properly for me many of the instances).
The Flybee16 appears to be a reasonably nimble drone for open air, it’s not probably the most highly effective drones on the market, and is extra suited to cruising or mild 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 folks isn’t beneficial. And on this case, would I take into account the Flylens75 with O4 Lite? In all probability not, as a result of the O4 digital camera is simply not adequate for any cinematic flying. I might quite get the model with bare O3 to be sincere, which presents 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 incorporates a bigger 85mm body and 2-inch bi-blade props. The remainder of the {hardware} are similar, together with motors. And it’s primarily a ductless Flylens85, over 20g lighter, providing approach higher flight time and efficiency.
I beforehand reviewed each the Flylens75 and Flylens85, and I most well-liked the Flylens85. The bigger Flylens85 merely flew higher for me and supplied barely longer flight instances, presumably as a result of 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 properly. 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 total drone. Likewise, between the Flylens75 and Flylens85, the Flylens85 can also be the superior possibility.
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 lowered weight and a few stage of propeller safety. Its weight falls between these two fashions, whereas different specs stay similar.
Except you particularly require propeller safety, I’d advocate the Flybee20 for outside freestyle flying. The Flytimes85 would possibly swimsuit blended flying environments the place you regularly transition between indoor and outside areas. Nevertheless, realistically, a 2S 2-inch whoop is barely too giant and highly effective for flying in the home in my view. Moreover, the DJI O4’s video high quality isn’t enough for cinematic functions. If cinematic footage is your aim, take into account 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 data accessible on-line but in addition to 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 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
- Value: $199.99
The place to Purchase:
I actually loved flying this whoop indoors, however some folks report jello points with the digital camera mount though I personally didn’t get that with mine. I gained’t go into an excessive amount of element right here since I’ve written an entire evaluate you possibly can try: 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 may deal with stronger winds open air. Nevertheless, this elevated energy comes with trade-offs: the Femto is noisier and fewer agile indoors as a result of its heavier weight. The smaller props imply that the motors should work tougher (spinning at larger RPM) to maintain the drone afloat in comparison with the Meteor75 Professional, making it louder and considerably much less environment friendly. On the flip facet, the quicker RPM response interprets to higher uncooked efficiency and responsiveness.
Whereas the Femto’s enhanced energy is interesting for outside flying in calm situations, it’s in an ungainly place. For indoor flying, I nonetheless assume the Meteor75 Professional presents superior dealing with. Outdoor, the Femto flies properly, 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 will be pushed round extra simply than bigger fashions. Try my evaluate to study extra: https://oscarliang.com/betafpv-pavo-femto/
The newer Pavo Pico 2 is simply an total 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, they usually have the identical prop measurement, the motor RPM could 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 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 total flight efficiency.
When it comes to precise flight efficiency, the Mobula7 O4 seems to fly properly, each agile and secure. But, regardless of its mild body, it lacks enough energy for critical outside freestyle, which is predicted from a tiny whoop of this measurement. You’ll be able to fly it open air, however solely in calm situations, 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 possible stems from the digital camera being mounted straight 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 Greatest DJI O4 Micro Drone?
2S or 1S for DJI O4?
A 2S setup is basically 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 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, which means producers should develop new flight controllers particularly geared up with sturdy BECs. As of now, BetaFPV is among the many few producers offering this feature (specifically the 3in1 Matrix FC board).
For Indoor Flying
For indoor flying, my prime 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 snug flying in the home. The 1S batteries are additionally cheaper, simpler to cost, and the setup produces much less noise total.
I believe the Firefly18 is a little more versatile – you possibly can set up the prop guard for indoor flights, or take away them in order for you extra energy and flight time in open air (nevertheless it’s loads of work putting in/eradicating these prop guards). The Meteor75 Professional may also fly outside too nevertheless it’s much less highly effective than the Firefly18. Additionally some pilots dislike the digital camera delicate 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 possibility is the Mobula7 O4, nevertheless it’s a 2S drone, and also you’ll want to think about in case your house 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 outside use my advice could 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, nevertheless it’s greater than succesful for informal freestyle flying in your native small parks. If you need a extra quiet and safer possibility, take into account 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 need a whoop (prop guard), the Pavo Pico 2 is a good possibility for outside.
The place to Purchase:
For each Indoor and Outside?
For those who’re in search of one thing versatile sufficient for each indoor and outside 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 quite than settling for mediocrity in each. As an illustration, whereas the Meteor75 Professional may also deal with outside flying below calm situations, 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.