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V2 Camera Damping Upgrade
Four custom damping balls isolate the O4 Pro camera mount and cut down visible vibration.
FLYWOO Micro Long Range
Explorer LR 4
O4 PRO V2
A sub-250g 4-inch long-range FPV drone with DJI O4 Pro imaging, V2 camera damping, GPS, Finder, and real travel range.
V2 Camera Damping
DJI O4 Pro Air Unit
GOKU F722 MINI 45A STACK
Pre-installed FLYWOO Finder
Quick Answer
Explorer LR 4 O4 PRO V2 is a sub-250g 4-inch long-range FPV drone built around DJI O4 Pro imaging.
It weighs about 179g without battery and can stay around 246g with the FLYWOO 4S 750mAh battery. V2 upgrades the DJI O4 Pro camera mount with four custom damping balls to reduce vibration, while the GOKU F722 MINI 45A stack, GOKU GM10 Mini V3 GPS and pre-installed FLYWOO Finder make it easier to fly, recover and maintain as a compact long-range FPV platform.
179g
Drone Weight
246g
Sub250 Setup
28 min
Cruising Flight Time
25
Satellites Found
7 Reasons to Choose Explorer LR 4
Why Explorer LR 4 V2 Stands Out
Only the camera mount is new for V2. The other cards summarize the platform strengths carried over from V1.
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DJI O4 Pro Imaging
4K recording and DJI digital transmission in a compact long-range build.
03
GOKU F722 MINI 45A STACK
An F722 flight controller and 45A ESC stack manage the power system cleanly.
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Sub250 Setup Available
Use the FLYWOO 4S 750mAh battery for an approx. 246g takeoff setup.
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Up to 28-Min Cruising
Choose the Explorer 18650 4S1P 3000mAh packs when flight time matters more than weight.
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4.5g GOKU MINI GPS
The 4.5g module can find up to 25 satellites and locks in quickly.
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FLYWOO Finder
If the battery disconnects after a crash, the buzzer keeps calling with a BBB sound.
Long-range flight scenes
When LR4 makes sense
Not just different terrain. These are the moments when a small long-range quad earns its place in the bag.
Scene 01
Travel & Vlogging
Sub-250 friendly in many regions, easy to pack, and light enough for trips where every gram matters.
V2 Camera Structure
A calmer O4 Pro camera mount
- 4 Custom Damping Balls
- Optimized O4 Wide / O4 Pro Camera Mount
- Made for new 1469D gyro batches
The V2 mount uses four custom damping balls to calm down camera vibration on newer DJI O4 Wide / O4 Pro Air Unit batches with the 1469D gyro. It keeps the camera support simple, light, and better suited to smooth long-range footage.
Imaging System
4K Travel Footage, Ready to Fly
- DJI O4 Wide / O4 Pro Air Unit support
- Clean 4K HD footage output
- RockSteady-ready smooth stabilization
Pair it with a DJI O4 Wide or O4 Pro Air Unit and Explorer LR 4 V2 becomes a compact travel camera in the air. It records crisp 4K footage, keeps scenic lines smooth, and lets you turn on RockSteady when you want cleaner, more stable clips straight from the flight.
Control System
F722 control, 45A power
- Plug-and-play O4 / O4 Pro connector
- Dedicated plugs for buzzer, GPS, and receiver
- 45A high-current ESC power
The GOKU F722 MINI 45A stack keeps the build cleaner with multiple onboard connectors, supporting plug-and-play DJI O4 / O4 Pro, buzzer, GPS, and receiver wiring while delivering strong 45A current for confident 4-inch long-range power.
Positioning
Small GPS, fast lock
- GOKU GM10 Mini V3 GPS
- Approx. 4.5g
- Up to 25 Satellites
- Fast Startup
At about 4.5g, the GOKU GM10 Mini V3 GPS is roughly 44% lighter than a typical 8g GPS module. You still get fast startup and up to 25 satellites, without adding extra weight to a compact long-range build.
Safety Recovery
FLYWOO Finder V1.0 Recovery Buzzer
- Built-in backup battery
- Works for hours after battery loss
- LED light plus loud buzzer alert
Explorer LR 4 V2 comes with the FLYWOO Finder V1.0. If the main battery pops off in a crash, the Finder can keep working from its own battery for several hours. The buzzer keeps calling, and the LED helps you spot the drone in grass, brush, or low light.
Short press 1s
Restart the buzzer.
Long press 2s
Turn the buzzer off.
Normal reminder
The Finder may beep after you remove the battery. Restart the buzzer and it will stop.
Product Description
Explorer LR 4 O4 PRO Sub250 V2 is a 4-inch micro long-range FPV drone with DJI O4 Pro Air Unit, a light frame, and a setup made for efficient cruising.
V2 uses a revised camera mount with four custom damping balls. This update targets the flight footage vibration seen on newer DJI O4 Pro Air Unit / DJI O4 Air Unit batches with the 1469D gyro.
With the FLYWOO Explorer 4S 750mAh battery, takeoff weight is about 246g. Pilots who want more flight time can use Explorer 18650 4S1P 3000mAh batteries for up to about 28 minutes of cruising.
Product Highlights
- V2 Camera Damping: Four custom damping balls isolate the O4 Pro camera mount and reduce visible vibration.
- DJI O4 Pro Air Unit: 4K recording and DJI digital transmission in a compact long-range build.
- GOKU F722 MINI 45A STACK: F722 flight controller and 45A ESC in one clean stack.
- Sub250 Setup Available: About 246g takeoff weight with the Explorer 4S 750mAh battery.
- GOKU GM10 Mini V3 GPS: About 4.5g, up to 25 satellites, and quick startup.
- Pre-installed FLYWOO Finder: If the battery disconnects after a crash, the buzzer keeps calling with a BBB sound.
Specifications
| Product Name | Explorer LR 4 O4 PRO Sub250 4K Micro Long Range V2 |
|---|---|
| Category | 4-inch micro long-range FPV drone |
| Drone Weight | Approx. 179g, without battery |
| Sub250 Setup | Approx. 246g with FLYWOO 4S 750mAh battery |
| Flight Controller | GOKU F722 Pro Mini V2 45A Stack |
| Motors | NIN V2 1404 2750KV |
| GPS | GOKU GM10 Mini V3 GPS, approx. 4.5g, up to approx. 25 satellites |
| VTX / Camera | DJI O4 Pro Air Unit |
| Camera Mount | V2 custom 4-damping-ball structure |
| Recommended Batteries | Explorer 750mAh LiHV 4S / Explorer 900mAh LiHV 4S / Explorer Sony 18650 4S1P 3000mAh / Explorer Molicell P30B 18650 4S1P 3000mAh |
| Finder | Pre-installed FLYWOO Finder |
| Propellers | 4024-2 |
In the box :
- Hex Wrench x 1
- ND Filter x 1
- 15x180mm Battery Straps x 2
- 4024-2 Propellers x 8
- Battery Anti-Slip Pads x 2
- 90° USB Type-C Data Cable x 1
- Hardware Screw Sets x 1
- Side Plate x 2
- Hex Wrench x 1
- 15x180mm Battery Straps x 2
- 4024-2 Propellers x 8
- Battery Anti-Slip Pads x 2
- 90° USB Type-C Data Cable x 1
- Hardware Pack x 1
- Side Plate x 2
- Flywoo LDS UFL Antenna x 1
- O4 / O4 PRO Connecting Cable x 1
- Fiberglass Protective Plate for O4 Air Unit x 1
- Walksnail Pro Kit Dual Antenna / Flywoo LDS Antenna Mount x 1
- ELRS 2.4G T Antenna Mount x 1
- TBS T Antenna Mount x 1
FAQ
Frequently Asked Questions
What is the main upgrade from V1 to V2?
V2 uses a revised camera mount with four custom damping balls. It targets the vibration seen on newer DJI O4 Pro Air Unit / DJI O4 Air Unit batches with the 1469D gyro.
How far can Explorer LR 4 O4 PRO V2 fly?
DJI lists the O4 Air Unit Pro video transmission range at up to 15 km under FCC conditions in an open, unobstructed, interference-free environment. That is a transmission spec, not a guaranteed flight distance. In real flying, range depends more on battery choice, wind, route, return margin, and local rules. For typical Explorer LR 4 long-range flights, 3-5 km is a realistic reference distance.
I have the V1. What should I buy to update it to V2?
V2 changes the camera mounting structure. Apart from the front and rear arms, most frame parts are different, so a small parts swap is not the clean path. If you want to update a V1 build, we recommend buying the V2 Frame Kit directly.
Does it support RTH and failsafe return-to-home?
Yes. Explorer LR 4 O4 PRO V2 ships with RTH configured from the factory. It can support return-to-home and failsafe return-to-home after signal loss. Before long-range flights, always confirm GPS lock, home point, failsafe behavior, and local flight conditions in a safe open area.
Where can I download CLI and STL files?
You can download CLI files, STL files, manuals, and other support resources from the FLYWOO Support Center. Please click here to view: https://flywoo.net/pages/support-center
Is this the DJI O4 Pro or DJI O4 Air Unit version?
This page is for the DJI O4 Pro Air Unit version. The DJI O4 Air Unit version will have a separate landing page.
Can it stay under 250g with a 750mAh battery?
Yes. With the FLYWOO 4S 750mAh battery, the total weight is approximately 246g.
Which battery is recommended for longer endurance?
Use the Explorer Sony 18650 4S1P 3000mAh or Explorer Molicell P30B 18650 4S1P 3000mAh. In cruising flight, they can reach up to about 28 minutes.
What are the advantages of the GOKU GM10 Mini V3 GPS?
It weighs about 4.5g, can find up to 25 satellites, starts quickly, and fits micro long-range builds well.
How does the FLYWOO Finder work?
Even if the battery disconnects after a crash, the buzzer emits a BBB sound to help locate the drone. Short press for 1 second to restart the buzzer. Long press for 2 seconds to turn it off. It is normal for the buzzer to sound after removing the battery; simply restart the buzzer.
What are the two side plates used for?
The drone is designed to be lightweight. In windy conditions, the two side plates can be installed to add support and improve frame stability.
How do I install the side plates?
Remove the screws at the bottom of the motors, then secure the side support plates together with the motors.
