Strap for Transocean Day & Date Stainless Steel / Black / Calf / Folding

The lug width of the Breitling Transocean A4531012/BB69/112X/A20D.1 is 22mm. This measurement should be taken internally between the two lugs, close to the case, using a digital calliper for an accurate reading. Adhering to this measurement is essential to ensure a proper fit between the strap and the case.

For the Transocean A4531012/BB69/112X/A20D.1, a lacquered alligator strap with symmetrical grain enhances the watch's technical elegance. Alternatively, vegetable-tanned calf leather develops a patina over time that complements the instrument's character. For more active contexts, vulcanised rubber provides durability without compromising visual proportion. In all cases, the 22mm lug width must be respected precisely.

To replace the strap on the Breitling Transocean A4531012/BB69/112X/A20D.1, a springbar tool is required — a forked-tip instrument that compresses the spring bars housed within the lugs. Work laterally, compressing one spring bar at a time to release the strap. It is advisable to work on a soft surface to avoid scratching the case, and to hold the spring bar with tweezers when fitting the new strap.

Yes, the aftermarket offers straps compatible with the Breitling Transocean A4531012/BB69/112X/A20D.1, provided they respect the 22mm lug width. Milano Straps offers a selection of handcrafted leather, rubber and technical material straps, made to specific measurements and profiles to ensure accurate fitting on the lugs of this model, without any modification to the original case.

The lifespan of a leather strap depends on the material, frequency of use, and exposure to perspiration and moisture. A quality alligator strap, with regular but not intensive use, retains its aesthetic properties for 3–5 years. Vegetable-tanned calf leather, whilst developing an appealing patina, generally has a slightly shorter lifespan under intensive use conditions. Storing the strap dry and away from heat sources will significantly extend its life. Milano Straps offers an 18-month guarantee against manufacturing defects.