iFlight Defender 25 O4 4S HD FPV Drone

The iFlight Defender 25 O4 4S HD is a compact, ducted cinewhoop FPV drone designed for high-quality aerial footage. Equipped with the DJI O4 HD digital FPV system, it delivers crisp 1080p/60fps video transmission with low latency. The durable frame and powerful 1404 4500KV motors provide agile flight performance, while the integrated BLITZ D25 F7 AIO flight controller and 25A 4-in-1 ESC ensure smooth handling. Ideal for indoor and outdoor cinematic flights, this drone supports 4S LiPo batteries (650-850mAh) and offers optional ELRS or TBS Crossfire receiver compatibility.

Advantages

Compact ducted design for safe indoor flying; DJI O4 HD system for superior video quality; high-performance components for responsive control; optional GPS module for position hold and return-to-home.

Suitable for

• FPV enthusiasts seeking a ready-to-fly cinewhoop
• Cinematic aerial videography in tight spaces
• Pilots wanting a durable, high-performance 4S drone

Key specifications

• FPV System: DJI O4 HD Digital
• Camera: DJI O4 Camera
• Flight Controller: BLITZ D25 F7 AIO
• ESCs: BLITZ D25 25A 4-in-1
• Motors: Defender 25 1404 4500KV
• Propellers: Defender 2525 (2.5-inch)
• Wheelbase: 112 mm
• Recommended Battery: 4S 650-850mAh LiPo
• Receiver: PNP (ELRS 2.4GHz or TBS Crossfire optional)
• GPS Module: BLITZ M10 GPS (optional)
• Video Transmission: Up to 1080p/60fps
• VTX Power: 25/200/500/700mW
• Internal Storage: 20 GB
• Antenna: Albatross LHCP
• Max Current (ESC): 25A continuous
• Input Voltage: 4S LiPo
• OSD: Yes (via DJI O4)

Recommendations

For best performance, use a 4S 650-850mAh LiPo battery and ensure the DJI O4 firmware is updated. The drone is PNP; select your preferred receiver (ELRS or TBS Crossfire) separately if needed.