Strap for Star Roman Chronograph UTC Automatic Silver

The lug width of the Montblanc Star 107113 is 22mm. This measurement is determined by the 42mm case geometry and represents the internal space between the two metal lugs. Verifying this dimension is straightforward: measure the internal distance between the lugs with a calliper or flexible ruler. All compatible straps must respect this width to fit correctly without lateral movement.

It depends on the context of use and aesthetic preference. For formal environments, a tawny alligator or burgundy shell cordovan strap enhances the 42mm's discreet identity. For daily professional wear, a vegetable-tanned calf leather in dark brown offers material authenticity and develops patina over time. For sporty styling, a NATO strap in Cordura canvas in navy blue is practical and maintains harmonious proportions. The choice depends on the watch dial: with a silver dial, cognac alligator is optimal; with a black dial, dark brown calf creates respectful contrast.

Strap replacement is a straightforward operation if fitted with standard screw lugs or quick-release system. Insert the tip of a spring bar tool (strap removal tool) under the metal lug and gently lift to compress the internal spring. The lug will detach. Repeat on the other side. To install a new strap, insert the lugs into the holes and press until locked. If the lugs are soldered, consult a watchmaker to avoid damaging the case. Montblanc supplies original 22mm straps; however, quality aftermarket straps ensure perfect compatibility.

Yes, any strap fitted with a 22mm-compatible lug adapts to the Montblanc Star 107113 without physical issues. The key is choosing a strap of equal construction quality: verify that the lug is machined from stainless steel or titanium, that the leather (if present) is tanned to European standards, and that the buckle or deployant clasp is functional and robust. Artisanal straps, especially those made in Italy with Tuscan calf or cordovan, often exceed OEM standards in terms of ageing and visible patina.

Lifespan depends on material, usage and maintenance. A vegetable-tanned calf strap, with moderate daily use (not exposed to excessive sweat or moisture), typically lasts 3–5 years before aesthetic replacement is required. Alligator and shell cordovan, being denser and more resistant, extend this lifespan to 5–7 years or beyond. A quality NATO strap in textile lasts 7–10 years. Proper maintenance—rapid drying after wetting, annual hydrating balm application—significantly extends service life. The 107113, being a quality timepiece, deserves straps that age with dignity.