Strap for Classima Executives Automatic 42

The Baume & Mercier Classima 10085 is equipped with a lug width of 18mm. This measurement represents the distance between the case lugs where the strap is attached. It is an established standard for dress watches of medium-large diameter and is particularly common in watches from Baume & Mercier released over the past two decades.

For a stainless steel dress watch such as the Classima 10085, we primarily recommend an alligator strap in brown tones (cognac, walnut) or black for formal occasions. If you prefer visible ageing, shell cordovan is excellent. Alternatively, vegetable-tanned calf leather offers softness and irregular patina development. For more casual use, a canvas NATO strap is practical and versatile.

The Classima 10085 features screw-down lugs (spring bars). To replace the strap, you will need a specialised tool (spring bar tool or steel spring pliers) to compress the elastic ends of the spring and extract it from the lug. We recommend entrusting this operation to a qualified watchmaker if you do not have the appropriate tool, in order to avoid damage to the case.

Yes, absolutely. The Baume & Mercier Classima 10085 with an 18mm lug width is compatible with any strap designed for this width. Artisanal leather straps, vegetable-tanned leather, rubber or quality fabric strap enhance the character of the piece and multiply its versatility of use compared to the original steel bracelet.

The lifespan of a leather strap depends on the quality of workmanship and usage. An artisanal strap in alligator or shell cordovan, with proper care (avoiding prolonged water contact, periodically repositioning), can last 5-8 years of daily use. Vegetable-tanned leather develops a patina that improves over time. A quality strap is an investment, not a disposable consumer item.