The aircraft is 1.2 metres (four feet) in diameter and is able to take off and land vertically and hover at an altitude of up to 1,000 metres (yards), Xinhua news agency said.

The unmanned disc is driven by a propeller and can be controlled remotely or sent on a preset flight path, it said.

Its top speed is 80 kilometres (50 miles) per hour, it added.

It took the Harbin Smart Special Aerocraft Co Ltd 12 years and 28 million yuan (4.1 million dollars) to develop the prototype craft, which is designed for aerial photography, geological surveys and emergency lighting, the report said.

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