It's been a few years since news of Prox Dynamics' Black Hornet mini-copter has swung our way.

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The Norwegian-designed Black Hornet Nano features a tiny camera and relays video and still images to a handheld control terminal.

BBC: Mini helicopter drone for UK troops in Afghanistan

If British troops do come under threat from insurgents, they have new technology to gather intelligence - the Black Hornet, a miniature surveillance helicopter with cameras to spy out hidden dangers.

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The MoD, which also operates more than 300 larger-sized unmanned air vehicles in Afghanistan, said the Black Hornet is carried easily on patrol and works in harsh environments and windy conditions.

BBC: Mini helicopter drone for UK troops in Afghanistan

Powered by battery, the Black Hornet is reported to have a range of about half a mile (800m), a top speed of 22mph (35kph) and can fly for up to 30 minutes.

BBC: Mini helicopter drone for UK troops in Afghanistan

The movie won't be released until January, but last year star Seth Rogen was there to talk it up and show off the Green Hornet's car, the Black Beauty.

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