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iFlight Defender 25 FPV Drone - HD 4S Cinewhoop Drone BNF with DJI O3 Air Unit for FPV parts

iFlight Defender 25 FPV Drone - HD 4S Cinewhoop Drone BNF with DJI O3 Air Unit for FPV parts


Regular price $569.87 USD
Regular price Sale price $569.87 USD
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Warehouse: China/USA/Europe, can delivery to all countries;

Free Shipping: 9-15 days;

Express Shipping: 5-8 days;

Return&Refund: 30 Days.

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iFlight Defender 25 FPV Drone  SPECIFICATIONS

Wheelbase: Bottom Plate

Use: Vehicles & Remote Control Toys

Upgrade Parts/Accessories: Frame

Tool Supplies: Cutting

Technical parameters: Value 2

Size: 112mm 2.5inch

Remote Control Peripherals/Devices: Remote Controller

Recommend Age: 12+y

RC Parts & Accs: Antennas

Quantity: 1 pcs

Origin: Mainland China

Model Number: Defender 25 HD

Material: Carbon Fiber

Four-wheel Drive Attributes: Assemblage

For Vehicle Type: Airplanes

Certification: CE

Brand Name: IFLIGHT

  • After 2 years with the very successful ProTek series, iFlight continues to strive for a better flying experience and performance with the next upcoming innovative step. Let’s meet the Defender25.


Ultralight & Free to Fly

At sub 249g weight, our Defender25 doesn't require registration in most countries. The compact and lightweight design also makes it easy to carry and store. It will be your best travel buddy to redefine your FPV adventure.

Small But Mighty

The built-in 2.5inch propeller guards were designed to fly bold. You’ll experience a complete new creative freedom to fly whenever and wherever. The durable injection molded frame does not only prevent damage to your motors or propellers, but also protects the environment of small flight errors.

4K Stabilized Video with 155°Ultra-Wide Angle

Equipped with the latest tech from DJI, the O3 Air Unit HD transmission system. The Defender25 supports 4K video and shoots up to 155°super-wide FOV footage for stunning visuals. In addition, D-Cinelike color mode provides more creative freedom for color grading, allowing you to edit and adjust your footage. (Source DJI)

We’ve also added a special vibration-damped camera mount to keep your raw footage as smooth as possible, as well as ensure good Gyro Data for the in-built or in-post camera stabilization.

Crash Protected Quick-Release Battery

New innovative quick-release battery and charging adapter to make everything as easy as it can be. The Defender25 comes with a stock 4S 550mAh. An Endurance 900mAh battery is optional.

Inbuilt high-performance Video and Receiver antennas

Optimized Landing Gear for Take-off in Complex Environment

Countless easy-to-use features let you get started right away: 

1) Turtle Mode pre-setup

2) Secured XT30 Battery Plug with Anti-Spark Filter

3) Motors with direction arrows

4) Props with positioning column for easy installation

5) All ports and buttons are easy to access

6) Mini camera mount (Naked GoPro, Insta360, etc.)

  • Product Name: Defender25 O3 4S HD
  • Flight Electronics: BLITZ D25 F7 AIO
  • Video Transmission: DJI O3 Air Unit
  • Frame: 112±2mm
  • Motor: Defender25 1404
  • Prop: Defender25 2525 props (2.5 inch)
  • Weight of the Aircraft: 180g
  • Takeoff Weight incl. 550mAh battery: ≤249g
  • Takeoff Weight incl. 900mAh battery: ≤280g
  • Dimensions (L×W×H):158x155x69mm
  • Max Ascent Speed: 6 m/s (Normal Mode, Sport Mode)
  • Max Descent Speed: 6 m/s (Normal Mode, Sport Mode)
  • Max Speed: 100Km/H (Manual Mode)
  • Maximum Takeoff Altitude: 200 m
  • Max Hover Time: Approx. 6 mins(with 550mAh battery), 10mins(with 900mAh battery)
  • Max Flight Distance: 2-3 km
  • Max Wind Speed Resistance: 80 Km/H (Level 5)
  • Operating Temperature Range: -10° to 40° C (14° to 104° F)
  • Transmission Power (EIRP): FCC: < 33 dBm / CE: < 14 dBm / SRRC: < 30 dBm
  • Antennas: Dual Antennas
  • GNSS: N/A
Video Transmission
  • Product Name: DJI O3 Air Unit
  • Weight: Approx.  36.4grams
  • Dimensions (L×W×H): L16.7 * W103.9 * H 81.3mm
  • Screen Size (single screen): 0.49-inch
  • Resolution (single screen): 1920×1080
  • Refresh Rate: Up to 100 Hz
  • Interpupillary Distance Range: 56-72 mm
  • Diopter Adjustment Range: -8.0 D to +2.0 D
  • FOV (single screen): 51°
  • Communication Frequency: 2.400-2.4835 GHz;5.725-5.850 GHz
  • Transmission Power (EIRP): 
  • 2.4 GHz: < 30 dBm (FCC), < 20 dBm (CE/SRRC/KC)
  • 5.8 GHz [4]: < 30 dBm (FCC), < 23 dBm (SRRC), < 14 dBm (CE/KC)
  • Max Video Transmission Bitrate : 50 Mbps
  • Operating Temperature Range: 0° to 40° C (32° to 104° F)
  • Power Input: 7-9 V (1.5 A)
Packing List
  • 1 x Defender25 O3 HD BNF
  • 1 x Defender25 550mAh Battery
  • 1 x Charging Adapter Board
  • 2 x Defender 2525 Props (pairs)

iFlight Defender 25 FPV Drone Review

Related Article:
(If there is any information error in the article, the product description shall be the standard.)
Title: iFlight Defender 25 FPV Drone: An In-Depth Evaluation

The iFlight Defender 25 FPV Drone is a cutting-edge unmanned aerial vehicle (UAV) designed for First Person View (FPV) racing and freestyle flying. With its high-performance components and advanced features, this drone offers enthusiasts an exhilarating flying experience. In this evaluation, we will delve into the composition and parameters of the iFlight Defender 25, highlight its advantages, compare it to competing products, discuss how to choose the right drone, explore DIY assembly options, provide operating instructions, and address frequently asked questions (FAQs).

1. Composition of the iFlight Defender 25 FPV Drone:
The iFlight Defender 25 FPV Drone consists of the following key components:
a. Frame: The drone's structure, typically made of lightweight and durable materials such as carbon fiber, providing strength and protection for internal components.
b. Flight Controller: The central processing unit responsible for flight stability, control, and communication between various components.
c. Motors and Propellers: Brushless motors and propellers generate thrust to lift and maneuver the drone.
d. Electronic Speed Controllers (ESCs): ESCs regulate the speed and power supplied to the motors.
e. FPV Camera: A specialized camera mounted on the front of the drone that transmits real-time video feed to the pilot's goggles or monitor.
f. Video Transmitter (VTX): Sends the video signal from the FPV camera to the pilot's goggles or monitor.
g. Radio Transmitter and Receiver: The pilot's controller and the drone's receiver communicate to transmit flight commands.
h. Battery: Provides power to the drone's electronic components.

2. Parameters of the iFlight Defender 25 FPV Drone:
- Frame Size: 250mm (diagonal motor-to-motor distance)
- Weight: Varies depending on configuration
- Flight Controller: iFlight SucceX-D F7 TwinG
- Motors: Brushless, typically 2204 or 2205 size
- Propellers: 5-inch tri-blade or quad-blade
- FPV Camera: High-quality CMOS or CCD camera with adjustable tilt angle
- Video Transmitter: Adjustable power output (25mW to 800mW) and various frequency bands
- Battery: Typically 4S or 6S LiPo batteries with varying capacities

3. Advantages of the iFlight Defender 25 FPV Drone:
a. Performance: The high-quality components and efficient design of the iFlight Defender 25 deliver exceptional flight performance, speed, and agility.
b. Durability: The carbon fiber frame and robust construction make the drone resilient to crashes and collisions.
c. FPV Experience: The FPV camera and video transmitter provide an immersive and real-time flying experience for pilots.
d. Customization: The iFlight Defender 25 allows customization and configuration adjustments, enabling pilots to optimize their drone's performance according to their preferences.
e. Expandability: The modular design of the drone allows for future upgrades and component replacements, ensuring longevity and adaptability.

4. Competing Products:
The iFlight Defender 25 FPV Drone competes with other popular FPV racing and freestyle drones, including:
a. TBS Oblivion: Known for its robust build quality and performance.
b. EMAX Hawk Pro: Offers a combination of power, durability, and affordability.
c. Diatone GT R349: Features a lightweight frame and excellent maneuverability.
d. GEPRC Phantom: Offers high-quality components and efficient flight performance.

5. How to Choose the Right FPV Drone

a. Skill Level: Consider your experience level as a pilot. Beginners may opt for ready-to-fly (RTF) or almost-ready-to-fly (ARF) models, while experienced pilots can go for do-it-yourself (DIY) kits.
b. Purpose: Determine whether you plan to race, freestyle, or capture cinematic footage, as different drones cater to specific needs.
c. Budget: Set a budget range and look for drones that offer the best value within that range.
d. Features: Consider factors such as flight time, durability, camera quality, and compatibility with accessories.
e. Community Support: Look for drones with an active user community, as this can provide valuable support, tutorials, and troubleshooting assistance.

6. DIY Assembly of the iFlight Defender 25 FPV Drone:
a. Research and Plan: Familiarize yourself with the drone's assembly instructions and gather the necessary tools and components.
b. Frame Assembly: Follow the manufacturer's instructions to assemble the frame, attaching the arms, flight controller, ESCs, motors, and propellers.
c. Electronic Connections: Connect the flight controller to the ESCs, motors, and other electronic components, ensuring proper wiring and soldering.
d. FPV System Installation: Mount the FPV camera, video transmitter, and antennas, ensuring proper alignment and secure connections.
e. Radio System Setup: Configure the radio transmitter and receiver, ensuring proper binding and calibration.
f. Battery Connection: Attach the battery connector to the power distribution board or ESCs, ensuring proper polarity and secure fastening.
g. Pre-flight Check: Perform a thorough inspection, ensuring all components are properly installed, secure, and functioning correctly.

7. Operating Instructions for the iFlight Defender 25 FPV Drone:
a. Pre-flight Preparation: Check battery voltage, propeller tightness, and ensure the flight area is clear of obstacles.
b. Power-up: Connect the fully charged battery and power on the drone.
c. Arm and Disarm: Follow the manufacturer's instructions to arm the motors for takeoff and disarm after landing.
d. Flight Modes: Familiarize yourself with different flight modes (e.g., Acro, Angle, Horizon) and configure them according to your preferences and skill level.
e. Flying Techniques: Practice throttle control, maneuvering, and acrobatic moves in open spaces away from people and objects.
f. FPV Experience: Wear FPV goggles or use an FPV monitor to view the real-time video feed from the drone's camera.
g. Flight Safety: Follow local regulations, respect airspace restrictions, and prioritize safety at all times.

8. Frequently Asked Questions (FAQs):
a. What is the flight time of the iFlight Defender 25 FPV Drone?
b. Can I use different cameras or video transmitters with the drone?
c. What are the recommended radio controllers compatible with the iFlight Defender 25?
d. How do I tune the flight controller for optimal performance?
e. What are the maintenance and safety practices for the drone?

The iFlight Defender 25 FPV Drone offers an exhilarating flying experience for FPV racing and freestyle enthusiasts. With its high-quality components, customizable features, and immersive FPV experience, it stands out among its competitors. By considering factors such as skill level, purpose, and budget, pilots can choose the right FPV drone for their needs. Whether opting for the iFlight Defender 25 or other competing products, proper assembly, adherence to operating instructions, and a focus on flight safety are essential for a successful and enjoyable flying experience.

Disclaimer: The specifications and features mentioned in this article for the iFlight Defender 25

FPV Drone are fictional and used solely for illustrative purposes. Please refer to the manufacturer's official documentation and product information for accurate details.

Customer Reviews

Based on 13 reviews
Jessie Kertzmann

good small drone)

Ali Funk

Muito bom chegou em perfeito estado e completo. Recomendo

Brenna Shields

Muito bom o drone! Veio sem tributação!

Mustafa Fritsch

iFlight Defender 25 FPV Drone - HD 4S Cinewhoop Drone BNF with DJI O3 Air Unit for FPV parts

Heloise Keeling

iFlight Defender 25 FPV Drone - HD 4S Cinewhoop Drone BNF with DJI O3 Air Unit for FPV parts