Defender 25 4S HD - RTF(G3)

Because this product is a virtual product, we will send the key via email after the customer receives the Commando 8 package. Therefore, please contact customer service to obtain it after receiving the package.

This key can only be used on Steam.

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 Defender 25. 

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.

O4 Video Transmission, Enhanced Perception

Equipped with the latest DJI O4 Air Unit Pro, upgraded with a 1.1/1.3-inch image sensor, which captures delicate details in low-light environments. With a 155° ultra-wide angle, it captures breathtaking visuals. Enjoy real-time video transmission with up to 1080p/100fps for an immersive flying experience.(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) Secured XT30 Battery Plug with Anti-Spark Filter

2) Motors with direction arrows

3) Props with positioning column for easy installation

4) All ports and buttons are easy to access

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

May 31, 2023: Defender 25 4S HD BNF comes with GPS installed by default.

October 24, 2023: The Charging Adapter Board has two versions, shipped randomly.

Note: The package only contains the cable to connect to the Naked Gopro, and does not include the cable to connect to the Gopro Bones.

Nov. 2, 2024: DJI Goggles 2 in RTF has been upgraded to DJI Goggles 3.

June 5, 2025: The HD version of BNF is changed from the DJI O3 version to the DJI O4 version.

Product Name: Defender25 O4 4S HD

Flight Electronics: BLITZ D25 F7 AIO

Video Transmission: DJI O4 Air Unit Pro

Frame: 112±2mm

Motor: Defender25 1404

Prop: Defender25 2525 props (2.5 inch)

Weight of the Aircraft: 170±5g

Maximum Takeoff Mass incl. 550mAh battery: ≤249g

Maximum Takeoff Mass incl. 900mAh battery: ≤280g

Dimensions (L×W×H): 158x155x69mm

Max Speed: 100km/h (Manual Mode)

Maximum Takeoff Altitude: 3500m

Max Hover Time: Approx. 6 mins(with 550mAh battery), 10mins(with 900mAh battery)

Max Flight Distance: 2-3 km

Max Wind Speed Resistance: Level 4

Operating Temperature Range: -10° to 40° C (14° to 104° F)

Antennas: Dual Antennas

GNSS: GPS+SBAS+Galileo+QZSS+Glonass

Product Name: DJI O4 Air Unit Pro 

Image Sensor: 1/1.3-inch

Lens: FOV: 155°

ISO: 100-25600

Video Resolution: 1080p/100fps H.265

Video Format: MP4, Max Video Bitrate: 130Mbps

Color Mode: Normal Mode/D-Log M

Stabilization: RockSteady 3.0+ ; Stabilization function off (When RockSteady is enabled, the shooting angle only supports standard.)

Live View Quality: 1080P@100fps

Operating Frequency: 5.170-5.250 GHz  & 5.725-5.850 GHz

Transmitter Power (EIRP): 5.1GHz＜23dBm(CE)/5.8GHz＜33dBm(FCC)/＜14dBm(CE)/＜30dBm(SRRC))

Max Video Transmission Range: With DJI Goggles 3/DJI Goggles N3: 15 km (FCC), 8 km (CE), 8 km (SRRC)

Communication Bandwidth: Max 60 MHz

Antenna: Dual antennas

Built-in Storage: 4GB

Supported SD cards: microSD (up to 512GB)

Operating Temperature: -10° to 40° C

Weight: Air Unit (camera module included): Approx. 32 g

Dimensions: Transmission Module: 33.5×33.5×13 mm (L×W×H)

Product Name: Commando 8 ELRS Radio

Weight: 310g (±10g）

Dimentions(LxWxH): L 190 x W 150 x H 51mm

Communication Frequency: 5.725-5.850 GHz

Transmission Power(EIRP):

2.4GHz: FCC: 27 dBm; CE: <14 dBm; SRRC: <19 dBm

900MHz:FCC: 30 dBm; CE: <14 dBm; SRRC: <19 dBm

Operating Current/Volts:  0.6 A @ 7.6 V

Charging Time: 1 hour and 30 mini

Operating Time: Approx. 8 hours

Operating Temperature Range: 0°C  to  40°C（32°F to 104°F）

Charging Temperature Range: 5°C to  40°C（41°F to 104°F）

Product Name: DJI Goggles 3

Weight: Approx. 470 g (battery included)

Dimensions (L×W×H): With antennas folded: 170×109×112 mm (L×W×H)

With antennas unfolded: 205×109×112 mm (L×W×H)

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: -6.0 D to +2.0 D

FOV (single screen): 44°

Communication Frequency: 2.4000-2.4835 GHz; 5.150-5.250 GHz; 5.725-5.850 GHz

Transmission Power (EIRP):

2.4 GHz:< 33 dBm (FCC)< 20 dBm (CE/SRRC/MIC)

5.1 GHz:< 23 dBm (CE)

5.8 GHz:< 33 dBm (FCC)< 30 dBm (SRRC)< 14 dBm (CE)

Max Video Transmission Bitrate: 60 Mbps

Operating Temperature Range: -10°C to 40°C (14°F to 104°F)

Battery Voltage: 5.6-8.4 V

Supported SD Cards: microSD (up to 512 GB)

Charger not included in combos, and sold separately. 

To ensure charging speed, it is recommended to use Flight PD 100W Charger or PD 30W Charger, or other USB chargers that support USB PD and QC fast charging protocols.

1 x Defender25 O4 HD BNF

1 x Commando 8 ELRS Radio

1 x DJI Goggles 3

1 x Defender25 550mAh Battery

1 x Type-C Charging Adapter

All iFlight BNFs are tested before shipment to guarantee the highest quality. 

If you still encounter a problem after receiving your shipment, please immediately contact our iFlight customer support at www.iflightrc.freshdesk.com.

1. iFlight products may be used for civilian purposes only and any direct or indirect use of iFlight products for or in connection with the following is prohibited:

(1) Any military combat purpose or military combat related use;  

(2) Terrorist activities: The purchaser also shall require its customers or end users to comply with the foregoing requirements.

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If Party A has violated applicable export control or economic sanctions laws and regulations, Party B has the right to immediately suspend delivery of products to Party A or terminate relevant cooperation without any liability.

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