The UDI RC U839 is a Chinese nano toy quadcopter (89x89x29mm, 36g) with 6-axis gyro, 4-channel 2.4GHz control, flips, high-speed mode and LED lights. Beginner/kids-oriented.
| Country | China |
|---|---|
| Subcategory | Nano / Micro |
| Subtype | Consumer nano toy quadcopter |
| Role | Toy/hobby |
| Classification | Consumer nano toy drone |
| Mission | recreational/toy |
| Datalink | 2.4GHz RC |
| Variants | U839 |
| MTOW (kg) | 0.036 |
| Frame type | Quadcopter |
| Length (m) | 0.089 |
| Propulsion | Electric (brushed), 3.7V 150mAh LiPo |
| Range (km) | 0.03 |
| Combat-proven | No |
| Export status | Commercial retail |
| Launch method | hand launch |
| Autonomy level | Manual |
| Endurance (min) | 8 |
| Recovery method | manual landing |
| Standard sensors | 6-axis gyro |
| Production status | Consumer (legacy) |
| Airframe / lift type | Multirotor – quad |
| Control / autonomy level | RC line-of-sight – VLOS |
| Domain | Aerial (UAV/UAS) |
| Mission / use case – civil | Consumer / recreational |
| Origin / supply chain | COTS (DJI, Autel, Skydio) |
| Propulsion | Electric (LiPo / Li-ion) |
| Range / endurance | Very close range (<5 km, <1 hr) |
| Signature / detectability | RCS – nano/micro (<0.01 m²), RF-emitting |
| Threat vector | Nuisance / negligent (airspace incursion) |
| Weight / class | Class I – Micro (<2 kg), FAA <250 g |