Huma20
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Experience the ultimate blend of micro-sized agility and next-generation digital video with the Sub250 Huma20 O4 Pro. Designed around a highly compact 95mm wheelbase, this 2-inch micro quadcopter packs the industry-leading DJI O4 Pro transmission system into a frame small enough to navigate tight indoor gaps and dense outdoor environments. Whether you are capturing cinematic bando lines or flying through your living room, the Huma20 delivers uncompromising HD clarity in a pocket-sized form factor.
Next-Gen Processing Power
At the core of the Huma20 is the powerhouse Redfox A3 45A AIO flight controller. Featuring an advanced STM32F722RET6 MCU and a highly sensitive ICM42688-P gyro, this stack provides immense computational headroom and noise-free data processing. This ensures your HD video remains perfectly smooth and your stick inputs feel instantly locked-in, even during aggressive maneuvers.
High-Efficiency 4S Powertrain
Don’t let its size fool you—the Huma20 packs a serious punch. It is driven by custom Sub250 1304 6000KV motors paired with responsive HQProp 2×2.2×4 (quad-blade) propellers. Tuned specifically for a 4S power system, this highly efficient powertrain delivers excellent throttle control and thrust, allowing you to easily recover from dives and carry the DJI O4 Pro hardware with ease.
Durable & Lightweight
Built to survive the inevitable bumps and scrapes of micro flying, the frame features a sturdy 2mm carbon fiber plate. Despite housing heavy-duty 45A BLHeli_32 ESCs and a premium HD video transmitter, the entire drone comes in at an impressively light dry weight of just 142g (±1g).
Key Features:
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DJI O4 Pro Integrated: Breathtaking digital HD video penetration and clarity in a 2-inch micro class.
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Pre-Installed ELRS 2.4G: Comes ready to bind with an ultra-low latency ExpressLRS receiver.
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F7 Processing: Redfox A3 AIO features an F722 MCU and a massive 45A ESC for reliable power.
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Smooth Flight: ICM42688-P gyro combined with 1304 6000KV motors provides jitter-free cinematic flight.
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Compact Footprint: Tiny 95mm wheelbase is perfect for proximity flying and tight gaps.
Specifications:
| Specification | Detail |
| Model | Sub250 Huma20 O4 |
| Wheelbase | 95mm |
| Carbon Plate Thickness | 2mm |
| Flight Controller | Redfox A3 45A AIO |
| MCU | STM32F722RET6 |
| Gyro | ICM42688-P |
| ESC | BLHeli_32 45A |
| VTX / Camera | DJI O4 Pro |
| VTX Mounting Pattern | 20mm x 20mm / 25.5mm x 25.5mm |
| Motors | Sub250 1304 6000KV |
| Propellers | HQProp 2×2.2×4 (Quad-Blade) |
| Receiver | ELRS 2.4G |
| Battery Connector | XT30 |
| Recommended Battery | 4S 720mAh LiPo |
| Weight | 142g ±1g (Without Battery) |


















