This is a mid -size case, band ,dial and all needed parts to change your ladies datejust into a mid-size watch. It is made to house a 2135 movement you can also put a 2030 movement. This watch came with 2135.
This is the tall bezel ring made for saphire crystal. If you are changing plastic crystal out you have to have the tall bezel to protect crystal. This is an aftermarket bezel. This is for a mans watch.