Removes and inserts crystals without disassembling the watch. Effortlessly remove and insert any round unbreakable crystal from 8 mm 45 mm without taking the watch apart or removing the bezel. Eliminates all rings, wrenches or pliers and the brass fins will not mar crystal. The gripping force can never lose strength because the fingers are mechanically operated. Access to the dial and hands is instantaneous and the works of one piece cases can be laid bare in seconds. A platform is provided to grip a new crystal for inserting into the watch.