![Apple Watch vs GPS Reference Clock [Video] Apple Watch vs GPS Reference Clock [Video]](/images/news/60630/290694/290694-64.png)
Apple Watch vs GPS Reference Clock [Video]
Posted May 23, 2017 at 3:10pm by iClarified
Check out the incredible time accuracy of the Apple Watch in this video that compares the smartwatch to a GPS Reference Clock in slow motion.
Back in 2015, Apple's Kevin Lynch explained that the timepiece is so accurate you can hold any of them side-by-side and you will see the second hands move in perfect unison.
Lynch explained how this was made possible.
"First of all, we’ve curated our own network time servers around the world," said Lynch. He says they've scattered 15 "Stratum One"-level Network Time Servers (NTP) (one level down from an atomic clock) around the globe. The servers are in buildings with GPS antennas on the roof that talk to satellites orbiting the earth. Those satellites all get their time from the U.S. Naval Observatory. The servers communicate with your iPhone via the Internet which then relays information to your Apple Watch. Corrections are done for time delay in communication.
Take a look at the video below...
[via Loop]
Back in 2015, Apple's Kevin Lynch explained that the timepiece is so accurate you can hold any of them side-by-side and you will see the second hands move in perfect unison.
Lynch explained how this was made possible.
"First of all, we’ve curated our own network time servers around the world," said Lynch. He says they've scattered 15 "Stratum One"-level Network Time Servers (NTP) (one level down from an atomic clock) around the globe. The servers are in buildings with GPS antennas on the roof that talk to satellites orbiting the earth. Those satellites all get their time from the U.S. Naval Observatory. The servers communicate with your iPhone via the Internet which then relays information to your Apple Watch. Corrections are done for time delay in communication.
Take a look at the video below...
[via Loop]



![iPhone 16 Named World's Best-Selling Smartphone in Q3 2025 [Report] iPhone 16 Named World's Best-Selling Smartphone in Q3 2025 [Report]](/images/news/99295/99295/99295-160.jpg)






![Apple Watch Series 11 Drops to New All-Time Low of $299 [Deal] Apple Watch Series 11 Drops to New All-Time Low of $299 [Deal]](/images/news/99283/99283/99283-160.jpg)
![AirPods 4 With ANC Are Still On Sale for Just $99! [Lowest Price Ever] AirPods 4 With ANC Are Still On Sale for Just $99! [Lowest Price Ever]](/images/news/99264/99264/99264-160.jpg)
![Final Cyber Monday Deals: M4 MacBook Air for $749, Beats, Sonos, and More [List] Final Cyber Monday Deals: M4 MacBook Air for $749, Beats, Sonos, and More [List]](/images/news/99203/99203/99203-160.jpg)
![iPad mini 7 Falls to New All-Time Low of $349 [Cyber Monday 2025] iPad mini 7 Falls to New All-Time Low of $349 [Cyber Monday 2025]](/images/news/99197/99197/99197-160.jpg)
![Apple Watch Series 11 Drops to New All-Time Low Price of $329 [Cyber Monday 2025] Apple Watch Series 11 Drops to New All-Time Low Price of $329 [Cyber Monday 2025]](/images/news/99195/99195/99195-160.jpg)