Omega
Speedmaster Broad Arrow 3152.30.00— lug 20mm

The lug width of the 3152.30.00 is 20 mm. This measurement is the absolute standard for this generation of Speedmaster Broad Arrow and is fundamental for selecting compatible straps. The correct measurement is taken by positioning a digital caliper perpendicular to the case lugs, measuring in millimeters from the inner shoulder of one lug to the other.

For this white gold model, we recommend anthracite grey alligator for sophisticated monochromatic styling, or brown shell cordovan to introduce chromatic warmth. If you prefer versatility and sportiness, a black rubber strap with silver stitching maintains coherence with the black dial and luminous case. Vegetable-tanned calf leather in burgundy is ideal for formal contexts where patina develops character over time.

To change the strap you will need a removable spring bar and a dedicated tool (spring bar tool). Position the watch in a soft vice, gently push the spring bar toward the opposite side to release the lug from the case, then extract the old strap. Position the new strap and reinsert the spring bar ensuring it is correctly locked on both sides. If you are not experienced, a professional watchmaker will complete the operation in a few minutes.

Yes, all straps with a 20 mm lug width are compatible with the Speedmaster Broad Arrow 3152.30.00. On milanostraps.it you will find a complete collection of 20 mm straps in different materials: alligator, calf, shell cordovan, rubber and NATO. All straps are customizable in sizes, initials and stitching thread color, guaranteeing perfect fit without adapters.

The durability of a leather strap depends on the material and usage. Genuine alligator and shell cordovan maintain structural integrity for 5-7 years with regular use, while vegetable-tanned calf tends to patina more quickly (3-5 years) developing historical character. Tropic rubber resists 4-6 years. The Casati Milano atelier guarantees 18 months on made-to-measure straps, covering any manufacturing or stitching defects.