Strap for Senator Perpetual Calendar Stainless Steel Black / Rubber / Folding

The lug width of the Senator 100-02-25-12-53 is 18 mm. This dimension was conceived to maintain the proportional integrity of the 42 mm case, allowing for the accommodation of thick leather straps, technical rubber, and NATO straps without aesthetic compromise.

The choice depends on intended use and aesthetic preference. An alligator strap in cognac is ideal for formal elegance, enhancing the silver dial. A vegetable-tanned calf strap in dark brown provides artisanal character and develops patina over time. A NATO strap in navy blue or charcoal offers chromatic versatility. An FKM rubber strap ensures daily practicality and water resistance.

The Senator employs a fixed lug system. To change the strap, remove the two horizontal spring bars connecting the lugs to the strap using a dedicated tool (spring bar tool). Position the tool on each bar, compress slightly inward, and slide the bar out of its housing. Insert the new strap and reinsert the bars. If inexperienced, consult a professional watchmaker.

Yes, absolutely. Any strap with an 18 mm lug width is compatible. Milanostraps offers a selection of artisanal straps in leather, alligator, shell cordovan, rubber, and NATO, all verified for constructive compatibility. We recommend selecting straps of elevated build quality, featuring double stitching and refined finishing.

Longevity depends on constructive quality, leather type, and intensity of wear. A high-quality alligator or vegetable-tanned calf strap can endure 5-8 years with regular use, particularly if subjected to periodic maintenance (gentle cleaning and application of nourishing balm). A rubber strap offers comparable durability with minimal maintenance requirements. Periodic strap replacement is recommended to maintain the constructive legibility of the timepiece and ensure maximum wrist comfort.