Strap for Navitimer 01 46 Stainless Steel / Black / Croco / Pin

The lug width (ansa width) of the Breitling Navitimer AB012721/BD09/760P/A20BA.1 is 24 millimetres. This measurement is standard for professional chronographs at 46 millimetres diameter and ensures correct visual proportion between the case and strap. Measurement is taken by spacing the two case lugs: exactly 24 millimetres separate the attachment pivot axes.

Alligator leather in vegetable tanning is the most representative choice for this Navitimer: the natural texture of the skin recalls the brand's avionic heritage and resists humidity variations typical of flight decks. An alternative aesthetic option is vegetable-tanned calf, which offers a more uniform surface finish. For a sports-oriented profile, 24mm NATO straps in parachute canvas replicate historical military equipment. FKM rubber (Viton) is ideal if the watch faces marine environments, where it degrades less than natural leather.

Strap replacement is achieved by extracting the spring bars that connect the strap to the case. Using a dedicated spring bar removal tool, gently depress the internal spring to release one end. Once the bar is removed, the old strap slides free and the new 24mm strap is inserted by reversing the procedure. It is essential to verify that the spring bars are fully engaged to prevent accidental watch drop.

Yes, any artisanal or industrial strap with a 24mm lug width is mechanically compatible with this model. Milano Straps supplies a dedicated collection of customisable 24mm straps, crafted from premium leathers including alligator, calf and shell cordovan, with options for buckle type (standard or deployant), thickness and stitch gauge. Mechanical compatibility is assured; aesthetic and construction quality depends upon the manufacturer.

Leather strap longevity depends upon use, climate and maintenance. A vegetable-tanned alligator strap of artisanal quality typically lasts 3–5 years with moderate wear (3–4 days weekly) in temperate climate, developing desirable patina colouration. Constant water exposure (saltwater, rain) significantly shortens useful life, as does elevated humidity. Preventative maintenance – quarterly conditioning with natural wax, drying after humid contact – can extend service life to 7–8 years. Casati Milano atelier provides 18-month warranty on artisanal straps, covering manufacturing defects and abnormal wear.