Strap for Classima Executives GMT Power Reserve

The lug width of the Baume & Mercier Classima 8878 is 18mm. This standard measurement allows for a wide selection of aftermarket straps, from classic leather models to sporty rubber or NATO fabric options.

The best strap depends on intended use and personal preference. For formal contexts, we recommend alligator or shell cordovan leather; for daily elegance, calf leather with vegetable tanning; for sporty versatility, natural rubber or high-quality polyamide NATO. The 18mm lug width ensures harmonious proportions with the 42mm case.

Strap changing is performed using standard 18mm lugs. Remove the spring bars using a dedicated tool, working gently to avoid scratching the case. Insert the new bars into the replacement strap and secure them to the lugs, keeping the strap perpendicular to the wrist. For professional service, Casati Milano atelier performs the change by appointment with sartorial precision.

Yes, any strap with an 18mm lug width is compatible. Ensure the strap has been designed for dress watches (not sports models), so colours and texture dialogue with the Classima's formal aesthetic. On milanostraps.it you will find a selection of 18mm straps specifically designed for watches in this category.

A natural leather strap of quality, subjected to regular use (worn 4-5 days per week), maintains its structural and aesthetic integrity for 3-5 years. Durability varies based on tanning, moisture exposure and maintenance level. Casati Milano straps benefit from an 18-month warranty and are crafted with vegetable-tanned leather, characterised by a natural patina that evolves over time, adding character and authenticity to the watch.