Neptune's latest smartwatch device
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CES 2014: The smartwatch that can make phone calls

Over the past year technology companies have tried numerous ways to make smartwatches communicate with our phones.

But Canadian start-up Neptune has gone one step further, putting the entire Android mobile operating system on a "watchphone", which can also double up as a helmet camera.

The BBC's North America Technology Correspondent Richard Taylor took it through its paces.

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