Firefly 20PRO 4S O4 Micro Drone Kit

Designed for FPV racers and freestyle pilots, the Firefly twin drones offer two flying experiences with one core VTX system. Choose the 2.5-inch 3S model for long-endurance freestyle and aerial shooting, or the 2-inch 4S model for high-power racing and extreme moves. With pre-tuned PID, crash-resistant frame, built-in buzzer and solder-free assembly, it’s ready to fly out of the box, letting you enjoy pure FPV freedom.

Product Highlights

• Seamless VTX swap between two drones, no re-soldering or calibration
• Factory pre-tuned PID, 120km/h max speed, no prop wash
• High-strength carbon fiber frame, reinforced front arm for crash resistance
• Built-in buzzer, one-click trigger to find lost drone easily
• Solder-free VTX+Buzzer+RX+GPS, plug-and-play, easy for beginners
• Shock-absorbing gimbal ：0°–25° adjustable lens angle; eliminates vibration and jelly effect for stable, clear footage.

  Crash-Resistant Frame  

  To fly hard, you need to crash hard. Both models feature a rigid 2.5mm high-strength carbon bottom plate. We’ve implemented a unibody front-arm structure to dramatically increase bend resistance. Stop worrying about snapped arms and focus on hitting those gaps.

  High Speed. Jello-Free.

  Our custom anti-vibration gimbal mount features a high-precision dampening structure that effectively filters out high-frequency frame vibrations. The lens is adjustable from 0° to 25°, perfectly accommodating flat cinematic cruising or pitched-forward racing. Perfectly paired with O4 PRO/O4 for buttery smooth HD footage.