Acer reveals the Jade Primo.

Shara Tibken/CNET

BERLIN -- Acer's new Jade Primo smartphone runs a full-blown version of Windows 10 , or at least it almost does.

The 5.5-inch actually handset runs Windows 10 Mobile but it adds Continuum, a feature that detects which type of Windows device you're using and configures the operating system accordingly. With Continuum and the included monitor dock, keyboard and wireless mouse, you can use the Jade Primo as a small computer on its own. Acer even calls it a "pocket PC".

Inside is a Snapdragon processor. Other features include a 21-megapixel main camera, with an 8-megapixel snapper on the front for selfies and video chat.

The phone has been announced in Berlin today, but is still in prototype form, so details are thin on the ground. It's expected to go on sale in 2016.

Update September 2 1:45pm Berlin time: Clarified Windows 10 and Continuum support.

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