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Firefly 20PRO 4S / 25MINI 3S HDZero Micro Drone – Whoop Lite VTX, STM32F405, 20A AIO, XT30

Firefly 20PRO 4S / 25MINI 3S HDZero Micro Drone – Whoop Lite VTX, STM32F405, 20A AIO, XT30

Flywoo

$189.99 USD
$189.99 USD
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Overview

Firefly 20PRO 4S / 25MINI 3S is an HDZero micro drone platform designed for FPV racing and freestyle, offering two flight configurations built around one core video transmission 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 maneuvers.

Key Features

  • Seamless VTX swap between two drones (no re-soldering or calibration)
  • Factory pre-tuned PID; up to 120 km/h max speed (model-dependent); reduced prop wash
  • High-strength carbon fiber frame with reinforced front arm for crash resistance
  • Built-in buzzer with one-click trigger for easier recovery
  • Solder-free VTX + buzzer + RX + GPS: plug-and-play assembly
  • Shock-absorbing gimbal with 0°–25° adjustable lens angle to reduce vibration/jello

For product support, setup questions, and spare parts assistance, contact support@rcdrone.top or visit https://rcdrone.top/.

Specifications

Parameter Firefly 25MINI 3S Firefly 20PRO 4S
Video Transmission System HDZero Whoop Lite & Micro Cam HDZero Whoop Lite & Micro Cam
Weight 97.5 g 97 g
Flight Controller MCU STM32F405 STM32F405
AIO GOKU F405 SE 3-4S 20A AIO GOKU F405 SE 3-4S 20A AIO
Gyroscope ICM42688-P / MPU6000 ICM42688-P / MPU6000
Black Box 8MB 8MB
Motor ROBO 1303 6000KV ROBO 1303 6000KV
Props 2520-3, 3-blade, 1.5 mm shaft 2023-3, 3-blade, 1.5 mm shaft
Battery Connector XT30 XT30
Voltage Input 3S LiHV (recommended 450 mAh / 750 mAh / 1000 mAh) 4S LiHV (recommended 550 mAh / 750 mAh)
Flight Times (data based on DJI O4 PRO VTX setup) 1000 mAh: 12 min 30 sec
750 mAh: 9 min 30 sec
550 mAh: 8 min
450 mAh: 5 min 		750 mAh: 6 min 30 s
Throttle (data based on DJI O4 PRO VTX setup) 1000 mAh: 27%
750 mAh: 26%
550 mAh: 25%
450 mAh: 22% 		750 mAh: 24%
Max Speed 95 km/h 120 km/h
Core Applicable Scenarios Long-endurance freestyle flying
Medium-to-long-distance racing
Travel photography/videography 		High-burst-power racing
Extreme freestyle maneuvers
Flexible indoor/outdoor flying

What’s Included

  • 1 x Firefly 20PRO (25MINI) HDZero Drone
  • 8 x 2023-3 Propellers (Purple)
  • 1 x Hex Wrench
  • 2 x Battery Anti-Slip Pads
  • 2 x 10*130 mm Battery Straps
  • 2 x Plastic protective side panel (Purple)
  • 2 x Plastic protective side panel (Black)
  • 1 x Flywoo O3/O4 Shock Absorber Ball
  • 1 x M2×6.6 mm Shock Absorber Ball
  • 5 x M2 Nylon Nuts
  • 5 x Washers
  • Complete Screw Kit:
    5 x M2x10 NHex Socket Head Cap Screws
    2 x M2x8 NHex Socket Head Cap Screws
    10 x M2x7 NHex Socket Head Cap Screws
    2 x M2x6 NHex Socket Head Cap Screws
    4 x M2x5 NHex Socket Head Cap Screws
    5 x M2x4 NHex Socket Head Cap Screws
    10 x M2x3 NHex Socket Head Cap Screws

Applications

  • FPV freestyle flying
  • FPV racing (indoor/outdoor, model-dependent)
  • Travel photography/videography

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