Strap for Star Traditional Twin Moonphase

The lug width of the Montblanc Star 110642 is exactly 22mm. This measurement refers to the distance between the centres of the two lugs on the watch case. When replacing the original strap, ensure you use a strap with a 22mm lug width to guarantee stable, secure mounting without unwanted lateral play.

The best choice depends on your usage and aesthetic preferences. For formal settings, an alligator leather in brown or black offers maximum luxury and durability. For daily versatility, a Swift calf leather in black or midnight blue delivers natural patina and elegant ageing. For sports or humid environments, a cotton NATO or FKM rubber provides practicality and resistance. All straps must feature a 22mm lug width.

Use a spring bar tool to carefully lever the spring bars from the lugs. Insert the tool tip into the small hole on the spring bar, apply steady upward pressure, and extract the pin. Repeat on the other side. Insert the new strap (22mm lug width) through both lugs and reinsert the spring bars into their holes, ensuring the bar is fully seated. This procedure requires care to avoid scratching the case.

Yes, any strap with a 22mm lug width is compatible. Aftermarket artisan straps (leather, alligator, shell cordovan, technical rubber) offer aesthetic and functional customization. We recommend selecting thicknesses proportionate to the case (between 3.5mm and 4.5mm for the leather) and finishes that dialogue visually with the stainless steel case.

A quality leather strap, with vegetable or traditional tanning, typically lasts 3–5 years of daily use, depending on climate, humidity, and maintenance. Leather tends to dry out in very arid environments and absorb moisture in humid climates. Regular maintenance with specialist balms and rotation with alternative straps significantly extends longevity. Alligator, being more robust, can last 7–10 years with proper care.