I bought this watch to have a relatively inexpensive watch that sets time to the GPS time signal (rather than to use GPS to track workouts, although the watch can do that, too). The GPS time signal is sourced from an atomic clock on a GPS satellite, and so can be considered a validated reference time that doesn't drift. It's what your smart phone uses.
For GPS time, the watch works well. To set the time (after initially choosing your time zone — that part is not automatic), just hold the GPS button (right middle button). The watch will beep and start to search for the satellite signal. Let go of the button when you hear the beep. The watch almost always finds the signal within a couple minutes, often faster (works reliably). It then beeps again. The time is automatically set to the GPS time signal. A second button press (left middle button) then cancels GPS mode. Simple! Once out of GPS mode the battery will last months on a single charge. Then, a rapid charge with the clever included cable (it clips to the watch rather than making you fiddle with a plug) is all that's needed. I set the watch to the GPS signal once a day when I leave my house for work and it stays accurate to the second all day. I charge it once a month or so.
Overall, you get accurate timekeeping and with much less frustration than watches that automatically set using the NIST long wave radio time signal (such as Casio Waveceptor). Buy a GPS time Casio and you're looking at a four-figure price.
The Ezon is stylish and easy to read, too, with an attractive negative LCD face and clean lines. The face can display just the hours/minutes, or also include the date or a numeric display of seconds. In all modes, a subtle LCD second "hand" progresses around the perimeter of the face.
The watch is water resistant and very easy to clean. Lysol or rubbing alcohol won't mar the finish. Wash it under a faucet with no problem.
Shipping from China was much faster than promised.
I thought there must be a downside so I waited a good while before reviewing — nope, it's still working great and looking like new. I recommend it!
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