I have serviced thousands of vintage Omega watches, each one gets timed out on my timing machine. Every now and then I’ll hear back from a customer about his watch being a little slow or a little fast. Here is some information about why your watch may run a little fast or a little slow even though it’s been timed on the machine. This information came directly from the source with a new Omega in the 1950’s and 60’s. It was true then and even more so now that your activity level makes a difference. If your watch happens to be a little fast or slow according to your life style, I will be happy to make an adjustment.