Sinn
Diving Watches 1015.011— lug 22mm

The lug width of the Sinn 1015.011 is 22 mm. This dimension ensures balanced optical proportions on the 41 mm case and allows the fitting of quality straps without mechanical constraints. To verify, place a millimetre ruler directly on the case attachment between the inner lugs: the measurement must correspond to 22 ±0.5 mm.

The choice depends on usage: for technical diving, a NATO in recycled synthetic fibres offers salt water resistance without maintenance; for professionals alternating diving and civilian contexts, dark alligator creates striking contrast with the titanium; for daily diving use, FKM rubber ensures constant elasticity at extreme temperatures. Vegetable-tanned calf leather represents the most versatile and aesthetic option, developing patina over time.

Remove the watch and place it on a soft surface. Locate the small metal pins (spring bars) on both sides of the case that anchor the strap. Use a spring bar tool with a curved end to gently compress the internal spring of the pin from above, allowing the strap to slide out. Repeat on the opposite side. To install the new strap, insert the pins into the strap slots and press gently into position until you feel the safety click.

Yes, the Sinn 1015.011 accepts any 22 mm strap. Quality aftermarket straps ensure mechanical compatibility and often offer superior aesthetic versatility compared to original options. Ensure the chosen strap has a precise 22 mm internal lug width and that the standard-length spring bars are correctly dimensioned to avoid scratching the case.

A quality leather strap treated with vegetable tanning has an average lifespan of 3-5 years with regular daily use, provided it is kept dry after immersion or prolonged water contact. The leather ages naturally, developing patina and use marks that increase the narrative value of the watch. To extend durability, apply protective balms every 6-8 months and allow the leather to dry completely after moisture exposure.