Flywoo Firefly 20PRO O4 Wide 4S (ELRS 2.4G)

The Flywoo Firefly 20PRO/25MINI series is designed as a modular micro FPV system: a shared upper unit with a digital FPV system can be swapped between two differently configured frames - the 25MINI for efficient, long-endurance flights and the 20PRO for dynamic, agile flying. 

Available Firefly 20PRO/25MINI Variants at a Glance

The Flywoo Firefly 20PRO/25MINI series - Compact Micro FPV Platform with a Versatile Concept

The Flywoo Firefly 20PRO/25MINI series combines an exceptionally compact design with a well-thought-out, modular concept for modern micro FPV drones. Depending on the version, the system is geared either more towards dynamic, agile flying or towards efficient, long-endurance freestyle and cinematic flights. This makes the platform a versatile foundation for different requirements and applications.

Just 4 Screws. Why build twice? The upper plate has been designed to accommodate the entire digital VTX and antenna system, while the powertrain remains securely bolted to the lower section. No resoldering required. In less than 3 minutes, the digital VTX can be transferred to the other frame, making it easy to switch from a 3S cinematic cruiser to a 4S bando basher.

The lightweight yet sturdy carbon frame, protected motor wires, and removable side panels ensure a clean and robust design. A vibration-damped camera mount with an adjustable angle supports smooth footage, while the service-friendly electronics with plug-and-play connectors simplify assembly and future modifications. This makes the Firefly 20PRO/25MINI series a flexible solution for pilots who value compact dimensions, intelligent construction, and versatile application options in a micro FPV drone.

Flywoo 20PRO O4 Wide

The Flywoo Firefly 20PRO O4 Wide is the lighter, particularly agile version for pilots who value a wide FPV image in a 2-inch 4S setup. With the Flywoo O4 Wide Air Unit and a 155° field of view, the setup remains compact and lightweight, while the 20PRO platform is designed for high-burst racing, tracking, and aggressive freestyle manoeuvres.

Features

• Lightweight 2-inch 4S version for particularly agile and direct flight characteristics
• Wide FPV image for better situational awareness on fast lines and in tight spots
• Lower weight compared to the O4 Pro version for a more responsive flying feel
• Ideal for freestyle, tracking, and dynamic flying in confined spaces

Specifications

• Frame
  • Firefly 20PRO Frame kit
• Propeller
  • Diameter: 2"
  • Blades: 3
  • Pitch: 2.3"
  • Shaft: 1.5mm
• Motors
  • Stator: 13mm x 3mm (1303)
  • Kv: 6000kv
  • Shaft Diameter: 1.5mm
  • Propeller Mount: T-mount
• AIO FC
  • Flight Controller/ESC: GOKU F405 SE 3-4S 20A AIO
  • Receiver: ELRS 2.4GHz
  • Battery Connector: XT30
• Camera and VTX
  • DJI O4 Wide
• Recommended Batteries (not included)
  • Explorer 750mAh LiHV 4S
  • Explorer 550mAh LiHV 4S

Package Contents

• 1 × Firefly 20PRO O4 Wide 4S - ELRS
• 8 × 2023-3 propellers
• 1 × hex wrench
• 2 × anti-slip battery pads
• 1 × ND filter
• 1 × 90° USB Type-C data cable
• 2 × 10 × 130 mm battery straps
• 2 × plastic protective side panels, purple
• 2 × plastic protective side panels, black
• 1 × Flywoo O3/O4 shock absorber ball
• 1 × M2 × 6.6 mm shock absorber ball
• 5 × M2 nylon nuts
• 5 × washers