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Smallest copter
According to Dutch site TRNDlabs copter SKEYE Pico Drone i> with dimensions of 22 mm * 22 mm * 19 mm and a weight of 7 grams is the smallest of the existing copter at the moment.
Copter so small that it is stored in its own controller under a transparent dome.
Included copter toss. Functionally similar to the little copter copter type Cheerson CX-10 : can perform tricks and has three levels of management complexity (Beginner, Mid-Level, Headless Mode), and built-in LEDs allow night flying.
At the moment, the cost copter 35 $ .
Source: geektimes.ru/post/263286/
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