Strap for Navitimer 1 B01 Chronograph 43 Red Gold / Blue / Croco / Folding

The lug width of the Breitling Navitimer RB0121211C1P3 is 22mm. This measurement is taken with a millimetre calliper between the inner faces of the two lugs at the point where the strap attaches. Accurate measurement is essential before purchasing an aftermarket strap, as Breitling lugs have a slightly curved geometry that may affect compatibility.

For the Navitimer in 18-carat red gold, an alligator strap with vegetable tanning in cognac or tobacco tones provides the most coherent pairing: the scale texture complements the visual complexity of the slide rule bezel, whilst warm hues enhance the red gold's copper-toned reflections. Smooth vegetable-tanned calfskin is the most versatile alternative for daily wear. A red gold or PVD gold deployant clasp preserves the strap and completes the aesthetic of the case.

The strap is replaced using a spring bar tool — a thin-tipped instrument that compresses the spring bars housed within the lugs. Insert the tool into the lug hole or between the strap and the case, compress the spring bar and slide the strap free. Care should be taken to avoid scratching the red gold case: protect surfaces with surgical tape or entrust the first change to a watchmaker.

Yes, the aftermarket offers a wide selection of straps compatible with the 22mm lug width of the Navitimer. Milano Straps produces handcrafted Italian straps in alligator, calfskin, shell cordovan and other materials, with bespoke options available through the Casati Milano atelier. It is important to verify that the chosen strap has a heel thickness compatible with the Breitling lug geometry.

The lifespan of a leather strap depends on leather quality, tanning method and daily use. A high-quality vegetable-tanned alligator or calfskin strap, properly maintained — cleaned regularly, conditioned with leather cream and rotated with other straps — can last between three and seven years. Prolonged exposure to perspiration, water and UV radiation accelerates deterioration. Milano Straps products carry an 18-month guarantee against manufacturing defects.