Strap for Pilot's Watch 856 S

The lug width of the Sinn 856.023 is precisely 20mm. This dimension is measured between the two spring bars that connect the case to the strap. Any error in measurement will result in incompatible strap sizing. Always verify this measurement with accuracy before ordering an aftermarket strap.

For the 856.023 we recommend vegetable-tanned leather straps (alligator or calf) in dark shades: brown, cordovan, black. These materials maintain coherence with the instrument-oriented character of the watch. For sports use or humid environments, NATO straps in nylon or vulcanised rubber models offer practicality and durability. Choice depends on intended use and personal aesthetic preferences.

To change the strap: 1) Obtain a spring bar tool; 2) Locate the small hole on the upper part of the lug; 3) Insert the spring bar tool into the hole and compress gently; 4) The pin retracts and the strap detaches. For installation of the new strap, insert the pins into the housings and verify they click correctly. A simple operation but requiring care to avoid damaging the case.

Any strap with a 20mm lug width is compatible with the 856.023. MilanoStraps offers a selection of vegetable-tanned leather models, NATO straps and FKM rubber models, all certified for this dimension. Always verify that the seller explicitly specifies 20mm compatibility before purchase.

A quality leather strap, with vegetable-tanned leather and artisanally crafted, has an average lifespan of 4-6 years in daily use conditions. Longevity depends on: frequency of use, climate (humidity accelerates ageing), quality of tanning and periodic maintenance. A well-maintained strap can exceed 8 years. Direct heat and excessive humidity significantly reduce lifespan.