Flywoo Explorer LR 4 HD DJI O3 Sub250

BNF Copters

Version	4S
Frame Design	Deadcat
Size	4"
Style	Longrange
VTX	DJI O3 Air Unit
Weight	168.4g

The Flywoo Explorer LR 4 is a specialized 4-inch quadcopter designed for efficiency, silence, and extreme range. By pairing the DJI O3 Air Unit with an ultralight DeadCat frame, it delivers stabilized 4K/60fps footage with up to 10km of video range. It is the ultimate "explorer" for pilots who want to fly for up to 30 minutes on a single charge while remaining compliant with sub-250g drone regulations.

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Last Updated: 15.08.2025

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Product Description

The Flywoo Explorer LR 4 HD DJI O3 is the drone that defined the "Micro Long Range" category. Co-designed with Dave_C FPV, it is engineered to offer the long-range capabilities of a 7-inch quad but in a quiet, 4-inch footprint that stays under the crucial 250g weight limit.

Sub-250g Compliance: The dry weight of the drone is only 162.8g. When paired with a 4S 750mAh or 850mAh LiPo, it stays comfortably under 250g, allowing you to fly in many regions without the restrictive regulations applied to heavier drones.
DJI O3 HD System: The integration of the O3 Air Unit provides a flagship-level digital link and high-quality onboard recording. It supports 4K/60fps and works seamlessly with Gyroflow for professional-level stabilization without needing a separate action camera.
Efficiency-First Propulsion: Utilizing NIN V2 1404 2750KV motors paired with Gemfan 4024 bi-blade propellers, the Explorer LR 4 is tuned for low amp draw and maximum "hang time" rather than raw speed or punch.
GOKU Mini GPS V3: Flywoo has equipped this version with their latest M10 GPS module, which can find up to 30 satellites significantly faster than older models. This ensures your "GPS Rescue" (Return-to-Home) is accurate and reliable.
Built-in Self-Powered Buzzer: If you crash and the battery is ejected, the onboard buzzer has its own tiny battery that will continue to beep for up to 5 hours, drastically increasing your chances of recovering the drone in tall grass or brush.

Technical Specifications:

Frame: Explorer LR 4 O3 (DeadCat Geometry)
FC & ESC: GOKU Versatile F405 Pro Mini Stack (20x20mm)
Motors: NIN V2 1404 2750KV
Propellers: Gemfan 4024-2 Bi-blade
GPS: GOKU GM10 Mini V3 GPS
Buzzer: Flywoo Finder v1.0
Weight: 162.8g (Dry)
Input Voltage: 2S-6S (Optimized for 4S)
Connector: XT30

The Pilot's Reality Check:

Battery Versatility: Use a 4S 750mAh–850mAh LiPo to stay under 250g for 10–12 minutes of flight. Switch to a 4S 3000mAh 18650 Li-ion pack for incredible 30-minute endurance flights (though this will push the total weight over 250g).
Fragility: To achieve its weight and efficiency, the arms are thin. This is a "cruising" drone, not a "bashing" drone—it will likely break if crashed into concrete at high speeds.

📦 Package contains

1 * Flywoo Explorer LR 4 HD DJI O3 Drone (Pre-built & Tuned)
8 * Gemfan 4024-2 Black Propellers (2 full sets)
2 * Battery Straps (15x180mm)
1 * Set of Spare Screws
1 * 3D Printed Camera Mount & TPU Spare Parts

🤔 Frequently Asked Questions

How does it achieve 30 minutes of flight time?
The "magic" lies in its efficiency. By using lightweight 4-inch bi-blade props and low-torque 1404 motors, the drone sips power. To hit the 30-minute mark, you must use a 4S 18650 Li-ion pack (like the Flywoo 3000mAh). For standard park flying, a 750mAh–900mAh LiPo provides about 8–10 minutes of much punchier flight while keeping it well under 250g.
Can it really fly 10km away?
Yes, under ideal FCC conditions. The DJI O3 Air Unit provides the video link, and the Explorer comes with a high-gain Albatross antenna to maximize that signal. However, always remember that your battery must have enough "juice" for the return trip, especially if flying against the wind.
What happens if I lose signal?
The drone comes with the GOKU GM10 Mini GPS V3 pre-configured. If you lose your radio link, "GPS Rescue" (Return to Home) will trigger, and the drone will fly back to its takeoff point. It also features a self-powered buzzer (Finder V1) that will beep for up to 5 hours even if the main battery is ejected in a crash.
Is the frame durable enough for freestyle?
Not really. The Explorer is an "ultralight" frame made for cruising and exploration. The arms are thin to save weight, so it will not survive the same "concrete slams" as a GEPRC MARK5. It is a "mountain surfer," not a "bando basher."
Do I need a GoPro?
No. The DJI O3 Air Unit on board records 4K/60fps stabilized video directly to its internal 20GB storage. Because of the "Deadcat" frame design, the propellers are not visible in the footage, giving you a clean, cinematic view without the weight of an external camera.