Strap for Chemin Des Tourelles Powermatic 80 39 Stainless Steel / Blue

The lug width is 20 mm, an unconventional measurement specifically designed to maintain ideal proportions on a 39 mm case. To measure accurately, use a ruler positioned between the inner edges of the left and right lug tubes. This precise dimension requires artisanal straps manufactured to tight tolerances to ensure perfect fit and security.

The watch pairs excellently with quality alligator leather in vegetable tanning, which develops patina over time, or shell cordovan for a rarer, more refined option. For a formal-everyday approach, vegetable-tanned calf leather in cognac or tobacco tones maintains aesthetic clarity. A NATO strap in cotton offers versatility, whilst FKM rubber represents the pure technical choice for intensive use.

Position the watch with the case facing downward on a soft surface. Observe the attachment type: if it features a spring bar, push downward with a flat tool (strap remover) to release the mechanism, then withdraw the old strap. If equipped with a deployante clasp, unpin the bracelet by opening the clasp. Insert the new strap by aligning the 20 mm width precisely within the lug tubes, ensuring the spring bar clicks firmly. Test security by gently pulling the strap outward.

Absolutely. An artisanal strap of quality, manufactured to correct tolerances for the 20 mm lug width, guarantees fit and reliability identical to the original strap. Choose specialised suppliers who understand the dimensional precision required. Premium materials such as alligator, shell cordovan and superior calf leather offer aesthetic and durability advantages over generic straps.

A quality leather strap, with proper maintenance, typically lasts 2–4 years of regular use. Shell cordovan, due to its natural density, may reach 5–6 years. Longevity depends on exposure to moisture, frequency of use, and periodic care. Occasionally apply strap-specific balm, avoid prolonged saltwater contact and store the watch in a dry environment. The patina that develops is a sign of material authenticity and nobility.