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iFlight Defender 25 O4 4S HD

The iFlight Defender 25 O4 4S HD is a compact BNF aircraft for recreational FPV flying and aerial filming. It combines a guarded, injection-molded frame with DJI O4 Air Unit Pro video transmission, a quick-release 4S 550mAh battery and pre-installed BLITZ SPLIT GPS.

Maximum hover time
Approx. 6 min(with 550 mAh battery), 10mins(with 900 mAh battery)
Aircraft weight
170±5g
Video transmission
DJI O4 Air Unit Pro

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Product overview

The iFlight Defender 25 O4 4S HD BNF combines BLITZ D25 F7 AIO flight electronics, Defender25 1404 motors and Defender25 2525 propellers. Its injection-molded frame incorporates 2.5-inch propeller guards to help protect the motors and propellers during small flight errors. Built-in video and receiver antennas, accessible ports and buttons, motor direction arrows and propeller positioning columns support straightforward setup and maintenance. A mini camera mount accommodates cameras such as a Naked GoPro or Insta360. The aircraft is intended for recreational FPV flying and aerial filming and does not support autonomous flight.

The DJI O4 Air Unit Pro provides a 155° field of view and 1080P@100fps live view, with 4GB of built-in storage and microSD support up to 512GB. RockSteady 3.0+ stabilization supports only the standard shooting angle when enabled. The quick-release battery system comes with a 4S 550mAh battery; a 900mAh endurance battery is optional. Supplied equipment includes the Defender 25 O4 aircraft, pre-installed BLITZ SPLIT GPS, a GoPro Bones cable and a Type-C charging adapter. The charger is sold separately. USB chargers supporting USB PD and QC fast charging protocols are recommended.

OEM & customization

Specifications

iFlight Defender 25 O4 4S HD specifications
SpecificationValue & conditions
Product nameDefender25 O4 4S HD
Flight electronicsBLITZ D25 F7 AIO
Video transmissionDJI O4 Air Unit Pro
Frame112±2mm
MotorDefender25 1404
PropellersDefender25 2525 props (2.5 inch)
Aircraft weight170±5g
Maximum takeoff mass240±5gIncluding 550mAh battery.
Maximum takeoff mass280±5gIncluding 900mAh battery.
Aircraft dimensions (L×W×H)158x155x69mm
Maximum speed100km/hManual Mode.
Maximum takeoff altitude3500m
Maximum hover timeApprox. 6 min(with 550mAh battery), 10mins(with 900mAh battery)With 550mAh battery or 900mAh battery, respectively.
Maximum flight distance2-3 km
Aircraft operating temperature range-10° to 40° C (14° to 104° F)
Lens field of view155°DJI O4 Air Unit Pro.
ISO100-25600DJI O4 Air Unit Pro.
Video resolution1080p/100fps H.265DJI O4 Air Unit Pro.
Video format and maximum bitrateMP4; maximum video bitrate: 130MbpsDJI O4 Air Unit Pro.
StabilizationRockSteady 3.0+; stabilization function offDJI O4 Air Unit Pro; when RockSteady is enabled, the shooting angle only supports standard.
Live view quality1080P@100fpsDJI O4 Air Unit Pro.
Operating frequency5.170-5.250 GHz & 5.725-5.850 GHzDJI O4 Air Unit Pro.
Transmitter power (EIRP)5.1GHz: less than 23dBm (CE); 5.8GHz: less than 33dBm (FCC), less than 14dBm (CE), less than 30dBm (SRRC)DJI O4 Air Unit Pro; frequency bands and regional standards as specified.
Maximum video transmission range15 km (FCC), 8 km (CE), 8 km (SRRC)DJI O4 Air Unit Pro with DJI Goggles 3/DJI Goggles N3; FCC, CE or SRRC as specified.
Communication bandwidthMax 60 MHzDJI O4 Air Unit Pro.
Built-in storage4GBDJI O4 Air Unit Pro.
Supported SD cardsMicroSD (up to 512GB)DJI O4 Air Unit Pro.
Air unit operating temperature-10° to 40° CDJI O4 Air Unit Pro.
Air unit weightApprox. 32 gDJI O4 Air Unit Pro, camera module included.
Transmission module dimensions33.5×33.5×13 mm (L×W×H)DJI O4 Air Unit Pro transmission module.