Why the Apple Watch Is the Most Accurate Timepiece out There

Apple Watch App Close Up

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When it comes to the Apple Watch, accuracy is exceptionally important. In an interview with The Telegraph, Apple’s VP of Technology, Kevin Lynch, went into exactly what goes on behind the scenes to ensure that the Watch is always as accurate as possible. Here are a few of the things that Lynch mentioned to The Telegraph as having an impact on Apple’s testing of the Watch and how the timepiece is able to maintain optimal performance no matter where your travels take you.

"When we were designing the Apple Watch, we really focused on accuracy. If you're in a room on New Year's Eve wearing one, you will be the best reference for when the New Year actually begins," he told The Telegraph.

Why the Apple Watch Is the Most Accurate Watch Available

  • In order to support the Watch, Apple built a Network Time Protocol (NTP) that operates using servers located in various difference locations. Those servers ensure that the time that appears on your Apple Watch is as close to Stratum One accuracy as possible.
  • According to Lynch, the second hand on the watch is perfectly in sync with the second hand on every other Apple Watch out there. Each device is accurate down to 50 milliseconds of coordinated Universal Time (UTC). While one Apple Watch may be slightly off from another, they’re so close that no human would be able to perceive the difference.
  • Time on the Watch actually comes from atomic clocks. "Atomic clocks measure time using the resonant frequency of a cesium atom — an atomic element — which works out the seconds for us,”Lynch told The Telegraph. "Their time is served to GPS satellites which orbit the earth, where high-precision time is used to help determine location. That time is then broadcast, and we deployed servers around the world to receive these signals from GPS satellites and serve the time with a time server, which in turn talks to the Watches."
  • The crystal in the Apple Watch was tested in a variety of different weather conditions to ensure its accuracy everywhere. The crystal will actually adjust when you’re in colder weather, a situation where watches are often less accurate, in order to ensure it maintains a consistent time.
  • The Apple Watch team used high-speed cameras to test the accuracy of the Apple Watch. The team filmed the screen at an astounding 1,000 frames per second, ensuring that each watch has a millisecond precision. That precise time comes from an atomic clock within Apple’s testing lab.

All that together makes for one exceptionally accurate timepiece. Next time you're trying to decide which of your friends has the most accurate cell phone or watch time, just throw out a few of these facts about your Apple Watch, you're likely to win the argument every time.