Defender 20 Lite O4: compact filming, clearly defined limits
This 2-inch, 2S aircraft uses the DJI O4 Air Unit and a separate camera mount. Its small format and supplied carrying case make it a portable option for short filming sessions. The version described here is the Defender 20 Lite O4, not an O4 Pro configuration.
A guarded layout for close surroundings
The propeller guard is removable for servicing, and the camera has an independent podded mount intended to reduce vibration. Neither feature makes close flight risk-free. Leave space around people and objects, and do not interpret the word “indoor” as a promise of silent operation or automatic obstacle avoidance.
GNSS is listed as absent. Buyers expecting a GPS-equipped camera drone should note that difference before choosing this model.
Recorded video is not the live view
The 4K description and the specification's 1080p/100 fps recording entry do not identify a consistent recording configuration. Confirm the installed O4 version and its available recording modes if a particular output format is essential. Live-view frame rates are a separate setting.
A camera recording mode should not be read as the resolution of every image seen in the goggles.
The “10 km” title needs context
That number comes from an FCC transmission entry associated with DJI Goggles 3/N3. It is not an indoor operating distance, a flight-radius recommendation or a guarantee for the complete aircraft.
Walls, interference, region settings and the actual equipment combination change the link conditions. Select a permitted filming location on its own merits, not from the maximum number in the title.
Controller revision
The listed change replaces the F411 AIO with the Borg F7 AIO. Ask which controller is in the supplied unit when comparing older stock with this specification.
Defender 20 Lite physical and electrical data
Wheelbase
87 mm.
Outer dimensions
125 × 125 × 44.5 mm.
Listed aircraft mass
69 ± 3 g without the stated flight battery.
Motor designation
Defender 16 1103, 14000KV.
Propeller
Defender 20 Lite 2020×3.
Battery-weight example
Approximately 108 ± 3 g at take-off with the listed 600 mAh pack.
O4 image sensor
1/2-inch CMOS, as named in the product data.
Storage
23 GB built in; no SD-card support is listed.
Temperature entry
−10 to 40 °C in the supplied specification.
The listed 6.5–7.5 minutes refers to hovering with a 2S 600 mAh battery, not a guaranteed filming session. Battery condition, maneuvering and the surrounding environment affect the time available in use.