Nano-drone on show in Tokyo

- At an exhibition in Tokyo is a display of the smallest drones in the world. The device is 3.5 centimeters and weighs 9 grams, the same as two sugar cubes. A slightly larger version, 11 grams, can carry a camera that makes while flying a four minute long recording.

Because they are so small, they do not require a license in Japan in any way to fly. The nano-drones 'come in green, pink and blue. They cost $ 60 to $ 100, converted 53 to 88 euros, reports Reuters.