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Is your smart watch as accurate as you think it is?

Bani McSpedden

With chronometer-rated mechanical watches now boasting movements accurate to a couple of seconds a day, one might have thought the eons-old battle for timekeeping precision was well won. Not so. Smart watches pull in their time signals from satellites, making accuracy a challenge within fractions of a second.

Safe in such knowledge, I'd assumed my two smart watches would display the same time. But I recently noticed that they differed, as did the phones they were tethered to. While my iPhone and Apple watch tallied, my Android twins, a Samsung Galaxy and TAG Heuer Connected, were five and seven seconds ahead respectively. Which display was right?

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Bani McSpedden is watch editor of The Australian Financial Review. Connect with Bani on Twitter. Email Bani at bani@bigpond.com.au

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    Original URL: https://www.afr.com/life-and-luxury/is-your-smart-watch-as-accurate-as-you-think-it-is-20160428-gohno6