Quick Quiz: Tech Check
How well do you know the world that lies beneath your dial? Our quiz tests your knowledge of some basic concepts. As always, the answers appear at the end. Good luck!Click here to take our quiz

The Official AP ROO 42mm Owners Club
Here's mine to start:

One week and I am confused but delighted with my 15400
This thread may sound like the ramblings of a broken mind, but I am wondering if any have felt the same. I have now had my new AP Ro 15400 for a week, and am loving it more each day.Maybe my brain was off the mark but in my thinking the RO was a sporty dress watch, and subconsciously I always thought of it as a historical 36mm watch in the same spirit as a Datejust or other SS dress watches. I viewed the Offshore as the big sports watches in the AP family. Having worn the 15400 now for a week, and as you do, constantly looked at my 7.5in wrist I have come to the conclusion that the 15400 is closer in spirit and size to the ROO than a traditional SS dress watch.This is not bad thing, but I have finally realised that this is a big watch on my wrist! The black dial has really gown on me which like all AP dials changes colour from black to silver to grey depending on the angle and light hitting it.No scratches yet, and it has been on a mini holiday as well this week, so must be doing some

Heaven & Earth: Breitling Chronomat B01 vs. IWC Big Ingenieur Chrono
Two chronographs with in-house movements �� Breitling's pilot-styled Chronomat B01 and IWC's rugged Big Ingenieur Chronograph, designed for earthbound adventure �� go head-to-head in this comparison test from our April 2010 issue, by writer Jens Koch and photographer Nik Sch?lzel..watchtime/reviews/hea...enieur-chrono/

Any tips on purchasing 5711 or 12 from AD?
The AD I bought my Rolex SubC also carries PP, but the Nautilus 5711/12 apparently up to 2 years?I'm in the MA area, anyone have any other ADs or route they might suggest?And what is the msrp for the 5712?I'm considering these vs a AP ROO but already have a 15400 and am selling quite a few other watches to help fund this, so feeling like Patek might be the way to go.