Strap for Speedmaster Moonwatch Co-Axial Grey Side of the Moon Meteorite

The lug width is precisely 21mm. This width is specific to this Speedmaster sport model and is not compatible with 20mm or 22mm straps. To verify, measure the inner space of the lug with a digital caliper.

For this model we recommend alligator in cognac or honey brown tones, which naturally complements the Sedna Gold, or vegetable-tanned calf leather for those who appreciate patina development. Black alligator offers elegant contrast by emphasizing the meteorite dial.

Speedmaster sport models use standard straight lugs. You need 2 tools: a spring bar removal tool or a thin screwdriver, and fine-tipped tweezers. Extract the pin from the upper lug by gently pushing, then slide off the old strap; insert the new strap and reinsert the pin from the opposite side. The procedure takes 5 minutes for experienced users.

Any 21mm strap in alligator, calf, shell cordovan, NATO, Cordura, or FKM rubber is compatible, provided the lugs are calibrated for this width. Always verify technical specifications with the supplier. Online you will find a wide selection of 21mm straps ready for shipment.

A quality alligator or calf leather strap has an average lifespan of 3-5 years with moderate daily use (5-6 days per week). Durability depends on wearability, climate, and maintenance: protect the leather from frequent sweat by applying protective cream every 6 months. Shell cordovan resists up to 7-10 years. For a watch like the Speedmaster we recommend rotating with at least 2-3 straps to extend overall lifespan.