Midsize Omega Seamaster (yeah, yeah, the Bond watch...). Quartz movement, not mechanical. I bought it because the case is tough and understated, the dial is easy to read with my aging eyes, and I just plain like the look and feel of it. I can wear it absolutely anywhere without any concern, and if I ever go down to 1000 feet below sea level, it will tell me exactly when I got so stupid :-)
