Watch with case convenient to replace

A watch, comprising a case, a movement and an inner container, the movement being disposed on the inner container, wherein the watch further comprises an engagement structure for assembling the case and the inner container;

• one part of the engagement structure is disposed on the inner container, and another part of the engagement structure is engaged with the case and is in elastic contact with the inner container;
• when the case is dismounted, the engagement structure is pressed to be elastically compressed towards one side of the inner container so as to be disengaged from the case;
• and when the case is mounted, an outer side of the inner container is sleeved by the case, and the case is pressed along a side wall of the engagement structure, so that the engagement structure is engaged with the case,
• wherein the engagement structure comprises an elastic component and an engagement block used for fixing the elastic component, the engagement block is fixed to the inner container, the elastic component comprises a buckle and an elastic element, the buckle is provided with a buckle hole, one part of the elastic element is disposed in the buckle hole, and another part of the elastic element is in elastic contact with the inner container.