Strap for Galactic 36 Automatic Stainless Steel / Diamond / Onyx Black / Sahara

The Breitling Galactic 36 reference A3733053/BE77/213X/A16BA.1 has a lug width of 18 mm. This measurement should be taken with a digital calliper on the inner side between the two lugs, as close to the case as possible, to ensure compatibility with any aftermarket strap.

For the Galactic 36 we recommend an 18 mm alligator porosus or vegetable-tanned calf leather strap, ideally with a modest thickness of 2.5–3 mm to respect the case proportions. A stainless steel deployant clasp ensures wrist stability and complements the case finishing. A nylon NATO strap is also a coherent choice given the brand's aviatory heritage.

The strap is replaced using a flat-tip or forked spring bar tool inserted into the small hole on the side of the spring bar between the lugs. Compressing the spring releases the bar and the strap can be removed. Work on a soft surface to avoid scratching the case. With standard 18 mm lugs no specialist tools are required, though a degree of manual dexterity is advisable to avoid deforming the spring bars.

Yes. Any strap with an 18 mm attachment — straight or slightly tapered — is compatible with the Breitling Galactic 36. Milano Straps offers a curated selection of handcrafted 18 mm straps in alligator, calf leather, shell cordovan, rubber and NATO, all compatible with this reference and available with a buckle or deployant clasp.

Longevity depends on the material and care. A quality vegetable-tanned calf strap worn daily will typically maintain structural integrity for 18–36 months; a high-grade alligator strap can exceed 3–5 years with regular cleaning and kept away from prolonged moisture. Shell cordovan, thanks to its dense fibre structure, is among the most durable options. Avoiding prolonged contact with water and perspiration significantly extends the life of any leather strap.