Technical Archive

Montblanc
4810 Collection 117186— lug 20mm

Montblanc 4810 Collection 117186: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

4810 Orbis Terrarum Great Britain

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Montblanc 117186
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

117186

Movement

Montblanc caliber MB 29.20 Hours, Minutes, Seconds, Day / Night Indication, World Time | Date

The Heritage

The Montblanc 4810 Collection Ref. 117186 is a contemporary evolution of a historic collection named after Mont Blanc's 4,810-meter altitude. This 43 mm stainless steel timepiece features the reliable Montblanc MB 29.20 automatic movement with bidirectional winding and includes hours, minutes, seconds, day/night indicator, world time function, and date display. The 20 mm lug width accommodates a wide range of aftermarket straps while maintaining aesthetic and functional integrity.

FAQ

What is the lug width of the Montblanc 4810 Collection Ref. 117186?

The lug width of the Montblanc 4810 Collection Ref. 117186 is 20 millimetres. This width is standard for 43-millimetre watches in this collection and is compatible with the entire range of aftermarket straps available in this size on Milano Straps.

Which strap do you recommend for the Montblanc 4810 Collection 117186?

For the Montblanc 4810 Collection 117186, we recommend an alligator or vegetable-tanned calf leather strap to maximise refinement and patina development over time. If you prefer a more versatile solution, a NATO canvas strap with leather backing allows fluid transitions between formal and casual contexts without aesthetic compromise.

How do I change the strap on my Montblanc 4810 Collection 117186?

Strap changing is performed by removing the two original lugs from the case using a dedicated tool (spring bar tool). Position the new strap by inserting the lugs into the corresponding slots until you feel the securing click. If you do not possess the tool, our Casati Milano experts can execute the change by appointment with complimentary styling consultation included.

Is an aftermarket strap compatible with the Montblanc 4810 Collection 117186?

Yes, any strap with a 20-millimetre lug width is completely compatible with the 117186 without requiring adaptations. Milano Straps' aftermarket straps are handcrafted in Italy and respect the original case geometry, guaranteeing perfect fit and absence of play.

How long does a leather strap last on the Montblanc 4810 Collection 117186?

A quality leather strap (alligator or vegetable-tanned calf) lasts an average of 4–6 years with daily wear, developing desirable patina over time. Longevity depends on wear frequency, ambient humidity, and maintenance. With proper care, leather ages beautifully rather than degrading, giving your 117186 an authentic visual history.