A possible concise summary is:
The video is about building a spy watch drone that can fly, record and live stream video. The creator tests different mini drones and chooses the best one to fit in a watch. He also makes a controller and shows how to use the drone for spying. He compares the drone to other models and shows its capabilities.
Here are the key facts extracted from the text:
1. The speaker has seen comments suggesting building a watch that turns into a spy drone.
2. The speaker has previously built one of the biggest drones in the world.
3. The goal is to build one of the smallest drones, small enough to fit in a watch.
4. The drone must be controllable and ideally have a camera that can live stream video.
5. Drone technology has advanced significantly in recent years.
6. Essential components for a drone include motors, ESCs, a flight computer, and a battery.
7. The speaker experimented with various drone parts to find suitable candidates for the spy watch.
8. Three potential drone candidates were tested on a flight course.
9. The red drone, named Cardinal, is about two and a half inches in size with an HD 720p camera.
10. The spider drone folds up to just over an inch and has an HD webcam.
11. The spire fly drone is slightly smaller than the spider drone and has a full HD webcam.
12. A new shell for the drone was 3D printed to blend in with the watch design.
13. A cover that looks like a watch face was made to conceal the drone inside the watch.
14. The speaker designed a sleeker controller housing for easier portability.
15. An app allows for live streaming and flying the drone from a smartphone.
16. The smartwatch app enables control and video recording of the drone.
17. A working spy watch drone with a controller was completed.
Please let me know if you need any more information or further assistance!