Strap for Star Traditional Chronograph GMT Automatic Black

The Montblanc Star 102135 features 22-millimetre lug width. This measurement is standard on this model and determines compatibility with aftermarket straps and bracelets. You can verify it by measuring the internal width with a digital calliper, positioned parallel to the watch case.

The choice depends on your usage and personal style. For formal occasions, genuine alligator leather conveys austere luxury. For a contemporary and sustainable approach, vegetable-tanned Tuscan calf offers natural patina and character. For sports and humid conditions, polyamide NATO or fluorinated rubber guarantee waterproofness and grip. All are compatible with the 22mm lug width.

Remove the previous strap using a spring bar tool gently inserted into the hole beneath the lug. Compress the internal spring to release the bar's end, then extract the strap. Insert the new strap by aligning the bar and release the spring. Ensure the strap is securely fastened on both sides before wearing the watch.

Yes, any strap with a 22mm lug width is perfectly compatible with the 102135. Quality artisanal aftermarket straps allow you to personalise the watch according to your aesthetic taste and functional requirements, without compromising its mechanics or case structure.

A quality European calf strap typically lasts 5–7 years with regular use on a single watch, longer if rotated between multiple watches. Durability depends on tanning type: vegetable-tanned leather develops natural patina and strengthens over time, whilst chrome-tanned leather tends to wear faster at bend points. Periodic maintenance and rotation significantly extend service life.