Strap for Divers Sixty-Five 40 Social Club Edition / Prague

The lug width of this timepiece is 20 millimetres. To verify, place a ruler perpendicular to the lugs and measure the distance between the two internal holes: you will obtain precisely 20mm. This dimension is essential for selecting the correct aftermarket strap.

The choice depends on your intended use. For formal contexts, we recommend an alligator strap with traditional vegetable tanning, which enhances the elegance of the case. For active diving, a robust polyamide NATO strap ensures reversibility and rapid underwater exchange. For everyday practicality, FKM (Viton) rubber offers absolute water resistance and minimal maintenance.

Obtain a spring bar tool. Position the watch on a stable surface, insert the tool into one of the two lateral holes of the lug, press gently downward to compress the internal spring, and extract the lug from its seat. Repeat on the opposite side. To install the new strap, align the lugs in the corresponding holes of the case and press until the locking click is felt.

Any strap with a 20mm lug width is compatible. Milanostraps.it offers a dedicated selection of artisanal models in leather, NATO, and rubber. Verify that the strap bears the '20mm' specification in the product datasheet and that the lugs are appropriately dimensioned for secure seating.

A quality leather strap with vegetable tanning and compact natural fibre maintains functionality and aesthetic appeal for 3–5 years of daily wear, provided regular cleaning and protection from prolonged moisture exposure. Salt water immersion accelerates ageing: in such circumstances, preventive maintenance and recourse to rubber straps during diving extends the life of the leather.