Delicate watches can be a real challenge but the Beco toggle press has zero point fixing to help you avoid glass breakage.  You can use it for closing cases and setting crystals. One advantage of this toggle press is that it mounts directly to the bench so it doesn't move around. it's got an easy spring lever that makes it comfortable and simple-to-use. It's designed for use with the 8-piece die set which is sold separately. You can see that the die goes in and out of the press very easily. Have the dies or concave and half flat so you have the tool you need for any watch your working on. The die set also comes with five spare o-rings. You can find the toggle press and the die set on Stuller.com.