Sergey Brin spotted testing new Google glasses

Billionaire co-founder of Google, Sergey Brin, was spotted travelling on a downtown train in New York late on Sunday night wearing the company's yet to be released Google Glasses, which is worth $1,500 a pair.

Straphanger Noah Zerkin spotted Brin riding a downtown train on Sunday evening, holding a plastic bag and sporting a winter hat.

In a Twitter message, Zerkin said he couldn't believe his eyes after seeing Brin in the train.

The pair of sunglasses worn by Brin are not Google Glasses mentioned in the article.

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But Zerkin, 32, said it looked as if the other passengers on the train did not appear to recognise the tech genius, or the cutting edge eyewear, the New York Daily News reports.

The $20-billion man's famed specs allow wearers to surf the Internet, make calls, and much more only through voice commands or pressing a button on the frame.

In a video released by the company last year, a goggle-wearer effortlessly gets directions, sends messages and takes photos while strolling Lower Manhattan.

Google glasses made their appearance on the runways at the Diane Von Furstenberg Spring 2013 collection during Fashion Week in New York.

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The goggles are being tested by a select few, and have been spotted on occasion around the city.

Models for Diane von Furstenberg sported them while walking the runway at New York Fashion Week in September, the report said.

Zerkin, who also develops 'augmented reality' headwear, said it was possible the gear would be widespread within just a few years, it added.