I first off would like to say that this is an amazing photo. Also, many of the photos you have are of a great quality. They are offered in an array of colors.
This particular photo really has caught my eye. I for one enjoy photography that encompasses clocks, watches, etc. as the main subject. The fine details you were able to capture is great! I personally love photos that have a lot of detail on the subject.
The falling hearts in the background and foreground are another feature that makes it such a great photo to look at.
The only thing I am concerned about is the end of the chain that is blurred. I see it as a distraction and that it draws the eyes away from the more important details and features of the photo.