Abstract: A three-element device for adjusting the length of a watchband having a main link larger than other length-adjusting links of the device and the watchband which is connected to two foldable-elements of the device foldable over one another to define a closure. The three elements form a three-element fitting normally connected to intermediate ends of a watchband. The main link is easily connectable to the watchband and can be disconnected thereto to provide for insertion of similarly constructed shorter length-adjusting links. Each of the links has a top and sidewalls opposite each other that are provided with openings through which a spring-loaded pin is inserted through a connecting extension on each link that is insertable on the underside of an adjacent link so that the pin is received through this extension and links adjacent length-adjusting links of the device. The links may be provided with a leading tongue that limits the relative movement of the links.