Strap for Chronograph 356 Pilot

The Sinn 356.020 features a 20 mm lug width, measured as the internal distance between the two attachment points from lug to lug. This is a fixed construction specification ensuring compatibility with all aftermarket straps of equivalent dimension, following the tradition of classic chronographs from the 1970s.

The choice depends on intended use. For civil and professional contexts, cognac-coloured alligator or vegetable-tanned brown calf leather maintains instrumental elegance. For military or outdoor environments, a satin NATO strap or vulcanised rubber reasserts technical vocation. Shell cordovan represents the definitive choice for those seeking durability and patina development over time.

The 356.020 strap is replaced by unscrewing the lugs, a straightforward operation performed with a specialised tool or by a qualified jeweller. The 20 mm lugs are universally compatible with any strap of identical dimension, requiring no mechanical adaptations. Ensure attachment points are perfectly aligned before final tightening.

All straps fitted with 20 mm lugs are fully compatible with the 356.020. MilanoStraps offers a curated selection of leather, textile and rubber straps specifically calibrated for 38–40 mm chronographs. Compatibility is guaranteed by standardised lug dimensions, requiring no constructive modifications.

A superior vegetable-tanned calf strap maintains structural integrity for 3–5 years of daily wear, developing desirable natural patina. Shell cordovan extends lifespan to 7–10 years. Alligator reaches 4–6 years. Durability depends on frequency of use, moisture exposure and routine care. Replacement is recommended when fibres exhibit obvious desiccation.