I actually prefer the GMT movement over traditional movements due to its ease of use (once you understand it) and flexibility, even when I don't need to track multiple time zones.When I first got my GMT Master II, I found that it was running about 7 seconds fast per day. Automatic watches will never be as accurate as quartz watches, but seven seconds per day is a little extreme for me. I sent the Ulysse Nardin to Rolex (through an authorized dealer) to have it adjusted, and when it came back, it was running at exactly one second fast per day. A year later, still just one second fast per day. Even when it was running seven seconds fast per day, although I wasn't impressed with its accuracy, I was impressed with its consistency, and now that it's been adjusted, I'm very impressed with both. Rolex makes their own movements (most watch manufacturers purchase them from another company) which means the inside of a Rolex is as well crafted as the outside.The only complaint I have about the Rolex GMT Master II is the clasp.
First of all, the crown has four separate positions. The zero position is all the way in and screwed down. To get to the first position, simply unscrew the crown and let it pop out away from the threads. You can't set the sale uggs while the crown is in the first position, but you can wind it manually (about 30 partial rotations away from you, or clockwise, will sufficiently wind the spring). You typically then want to move the crown out to the third and last position which allows you to set the minute hand and the 24-hour hand. At this point, don't worry about the date and the hour hand. Once the minute hand and the 24-hour hand are in position, push the crown all the way back in to get the watch started again (don't screw the crown down just yet), then pull the crown back out to the second position, or one in from the last. This is where you set the hour hand and the date. Turn the crown in either direction until the date and the hour hand are accurate (make sure to monitor whether you are post or ante meridiem), then you're done. Push the crown all the way back in, and screw it down. When you travel, unscrew the crown, pull it out to the second position, and move the hour hand either forward or backward depending on which direction you are traveling in. Keep the hour hand and the date synchronized with local time, and use the 24-hour hand to monitor the time back home.There are a few important features of the Rolex GMT Master II's movement which you need to understand in order to fully appreciate this watch: When you set the hour hand and the date, you can turn the crown in either direction, allowing you to set the watch forward and backward. Most watches are designed to only run in one direction and can be damaged by setting them backwards. While setting the hour and date, the better ugg keeps running which allows you to adjust to new time zones without losing time on your watch. When setting the second hand and the 24-hour hand, however, the the best ugg does stop which allows you set it right down to the second. Very nice. When setting the hour hand and the date, the date changes at precisely midnight rather than gradually changing over the course of hours.
