Update: I've changed the review from three to five stars after finding a spot in my house where the overnight update from the Colorado Springs Atomic Clock was successful. Though not a small house, finding a spot near a window that was not also near some sort of electronic equipment posed a challenge. Once I found the right spot, all is well.

That leaves me with my only minor complaint. The date window is a bit small and dark for someone with less than perfect vision. Otherwise, it's a superb timepiece.

Original review below.

Was looking for a perpetual calendar highly accurate non-chronograph.  The Citizen CB0020-09E seemed a perfect match. Unfortunately, I've been unable to activate the "atomic clock" updates either manually or automatically after a week, or so.  The watch itself is extremely accurate, gaining about 1 second over the course of the week so it's not a dealbreaker.  But considering that the A-T feature is an option that adds about as much to the cost of the watch as selection of the non-AT Titanium model, it's disappointing.  Had I realized I wouldn't have been able to take advantage of the automatic time setting, I would have selected another option.

Yes, I realize I can return the watch to Amazon. However, having purchased the silicon strap version of the watch and having had the ENORMOUS band cut to size for my wrist, I no longer have that option.  All in all, a beautiful watch but I'm not impressed by the A-T feature.