Weighing just around 300 grams — about the same as an apple — the robot can roll on the ground and take flight to pass over obstacles. It was created by a research team at the Harbin Institute of Technology (HIT). The team has developed multiple versions of the aerial/terrestrial robot, achieving an endurance time six times longer than similar-sized unmanned aerial vehicles. These robots can be used to perform tasks such as monitoring, probing, and maintenance. They come in various forms, such as two-wheeled or spherical designs. They can be adapted to different terrains, and they can also be equipped with manipulators to perform screwing or pressing actions.