I like this watch. I bought it for its style (and, okay, also a little for its tachymeter function). Having said that, (and it's purely subjective), I don't think it looks as good in real life as the pictures on the web site. And I don't know why. The pictures are accurate, they depict the watch fairly, etc.

Operationally, some things are worth noting:
There are two sub dials:
1) The lower right dial marked from 1-10 and measures elapsed minutes in the chrono mode up to 10 minutes
2) The upper left dial which has two shared functions:
-2a) In normal timekeeping mode it shows time in a second time zone via the outer ring which is calibrated from 1-24 to show hours in that time zone.
-2b) In chrono mode it shows elapsed time up to 4 hours; its inner ring is calibrated from 1-4 with tick marks at 10 minute intervals between the 1-4 hour marks.
3) there are two second hands:
-3a) one that always moves continuously in one second increments and is linked to the main hour/minute hands display (has a T within a circle), and
-3b) another which is the chronograph "second" hand. It is always pointed at 12 o'clock until activated by the chronograph function at which time it moves in 1/5 second increments.
4) The chronograph uses three separate dials to show elapsed time (up to 4 hours at which point it automatically stops):
-4a) the chrono second hand described in 3b above which shows elapsed time in 1/5 seconds up to one minute
-4b) the lower right dial which shows elapsed time up to 10 minutes
-4c) the upper left dial (which normally shows time in a second time zone) but in the chrono mode shows elapsed time up to 4 hours.

In practice it works like this: When the upper right button is pushed to activate the chrono function, the chrono second hand starts moving in 1/5 second increments. At the end of the first minute, the lower right hand moves from zero to 1; at the end of the second minute, the lower right hand moves from 1 to 2. This continues until the lower right dial reaches 10 at which time the upper left dial (which reset to zero from its second time zone setting when the chrono function was activated) moves to its first tick mark - 10 minutes. This process continues until the elapsed time = 4 hours at which time the chrono function stops. To reset the chrono to zero (and restore the second time zone functionality), press the lower right button. This is all a bit convoluted, but, as I see it, this is a "style" watch so function can be "liberalized" to favor style.

To use the fly-back function, start the chrono function as usual with the upper right button. When you want to time a second sequence, you would normally press the upper right button to stop the chrono function, then press the lower right button to reset the chrono, and then press the upper right button to again start the chrono function. But with the fly-back functionality, after pressing the upper right button to start the chrono, simply press the lower right button and upon releasing it, the chrono is stopped, reset to zero, and restarted - all with one press of the lower right (fly-back) button!

As to overall operation. The watch seems to work fine. For the few days I've had it, it's within a few seconds of the atomic clock in Boulder. The second time zone (using the upper left dial) works great, the fly-back function works great, the chronograph works great, etc. And the chronograph accumulates time up to 4 hours using the three different dials.

I haven't had the band problems with the black edging falling off as mentioned by another reviewer, but the band does scuff easily.

Two nits I have:
1) One is mentioned by another reviewer: the regular second hand (the one with the T in a circle) doesn't always land on the "second" tick marks - sometime it is a little short, sometime a little long, etc. The second hand does make 60 stops per revolution, so overall it's accurate, but it's just an annoyance that a company in the watch business (for many years) can't get the second hand to stop at exactly 1/60 of a revolution and match that up with the printed tick marks.
2) The Indiglo feature, which I've seen to be fantastic on other Timex watches, is very pale in this one and is really hard to tell time with when dark.

In summary, I like this watch and am keeping it, even though I made a pact with myself a year or so ago to only buy watches with solar charging and radio controlled time...