Strap for Tonda Metrographe Stainless Steel / Black / Strap

The lug width of the Tonda PFC274-0001404-XC1442 is 20mm. This measurement indicates the internal distance between the two attachment pins that connect the strap to the case. It is a critical specification to ensure compatibility: only straps specifically designed for 20mm lugs will fit correctly without play or excessive tension.

For the Tonda PFC274-0001404-XC1442, alligator with regular grain represents the most aesthetically coherent choice, emphasising the geometric purity of the case. Vegetable-tanned calf leather offers versatility and develops a natural patina over time. NATO straps in nylon transform the chronograph into a sporting instrument whilst maintaining formal dignity. Vulcanised rubber straps provide extreme durability and underscore the technical vocation of stainless steel.

Strap change requires a specific tool called a spring bar remover, a small lever that allows compression of the elastic pins securing the strap to the case. Position the tool under the lug from the rear, apply gentle pressure to compress the pin, and slide the strap out of the case lugs. To install a new strap, align both ends of the lug with the holes on the case and press gently until you hear the click of the elastic pin engaging. We recommend performing this operation on a soft, flat surface to prevent scratches.

Yes, any artisanal strap with a 20mm lug width is compatible with the Tonda, provided the strap depth (vertical thickness) does not exceed 4-5mm. Premium straps, such as those offered by MilanoStraps, are designed to absorb manufacturing tolerances of luxury chronographs and guarantee perfect fitting without aesthetic or functional compromise.

The lifespan of a leather strap depends on tannage, usage and environmental conditions. A premium alligator or calf leather strap, subjected to moderate use and proper maintenance, has an average life of 4-6 years before leather shows significant signs of wear. Prolonged exposure to sunlight, salt water and perspiration accelerates ageing. Vegetable tannage, whilst more natural, requires more conscious maintenance but develops a fascinating patina over time. Rubber or NATO straps, conversely, maintain their properties for 8-10 years.