I have long admired the IWC Pilot Worldtimer, primarily because of how it functioned. The usual world-time or GMT function provides pushers or a stem position for adjusting the 24-hour ring, and adjusting the main hands always moved the 24-hour ring as well. Cheaper world timers do not have an adjustable 24-hour ring, and put the timezone cities on a movable bezel to allow the user to adjust the GMT offset.
But some of the better regular GMT watches do it right. Examples include the Omega Seamaster GMT, the Rolex GMT Master II, and the IWC. Zenith, one of my favorite brands, didn't get this right, sad to say--the pushers move the 24-hour hand (or ring), which is the one thing that doesn't change as one travels. The watches that get it right provide a quickset 12-hour hand so the the 24-hour GMT hand doesn't have to be touched when traveling. The point of GMT is that it doesn't change with local time, after all.
The 24-hour ring of a world timer should work the same way as on a proper GMT watch, it seems to me. Once set so that the times read correctly for the cities on the city ring, it should not need to be readjusted unless the watch stops. The times in those cities do not change even if one travels to a different time zone.
The IWC got this right. It provides a settable 24-hour ring, but if one travels to a different timezone, the middle stem position quick sets the 12-hour hand in both directions, just as with the Rolex GMT Master. So, it provides the GMT integrity of a GMT Master while providing the ability to know the local time for a global team, like a world timer. It also sets the date forward and backward with the 12-hour hand, for those flying west across a midnight timezone.
The IWC accomplishes this using their adjusted ETA 2892, plus a world-timer module of their own design and make. The watch is lovely, but it is a pilot design and it is really big at 46.5 mm. But the biggest problem for me is the price, at $9600 retail and still well over $6000 on the gray market.
So, I haven't even mentioned the subject watch yet. The B&M Capeland Worldtimer came up on my searches for reviews of world-time watches, and an early review on Hodinkee suggested it used a movement from "a Richemont sister brand". Hey, Richemont owns IWC. So, I downloaded the B&M user manual, and confirmed that it works just like the IWC. Further research revealed that it indeed uses the IWC module, but on a high-finish Sellita SW-300 base movement instead of the IWC-tweaked 2892.
The B&M is also a bit smaller, at 44mm, though it is still a big watch. Its styling is far more traditional and less technical, with blued Breguet hands on a cream dial, but I suspect it will wear better with suits (as long as I wear shirts with generous cuffs). The sapphire crystal that stands proud of the bezel is a nice recollection of an earlier time, and I'm a sucker for blued hands. The blue strap?...well, it's a standard size.
I haven't read much about this, and most reviewers missed the similarity with the IWC operation (which they bragged about in their review of the IWC), so most folks probably think it works like cheaper GMT watches that use an ETA 2893.
But with our favorite gray-market shop in New York discounting this watch very deeply, it was just too good to pass up.
(Pictures borrowed from Hodinkee article.)
Rick "now the wait begins" Denney