Strap for Speedmaster Professional Moonphase Apollo 11 30th Anniversary

The reference 3689.30.31 is fitted with a 20 mm lug width. This measurement is the exact distance between the metal terminals of the case where the strap attaches. A precise measurement with a caliper is recommended before ordering any aftermarket strap to avoid discrepancies.

For this white gold model, we recommend havana alligator or dark chocolate shell cordovan. Alligator offers uncompromising elegance and a natural grain that respects the chronograph dial. Shell cordovan develops a deep lustrous patina and superior tactile memorability over time. Both enhance the warm tone of 18K gold.

The strap is replaced by removing the lugs from both sides of the case. Generally, a specific tool (lug remover) is required to extract the pins from the lug slots without damaging the case. Insert the new strap by aligning the terminals to the lug slots and secure firmly. If in doubt, contact an authorized Omega service center or a professional watchmaker.

Any strap with a 20 mm lug width is theoretically compatible, but we recommend quality products: alligator, shell cordovan, Italian calf with vegetable tanning. MilanoStraps straps are customizable in size, color, and stitch thread. Always verify that the width is exactly 20 mm before purchase.

With regular use, a quality leather strap typically lasts 2-3 years before showing visible signs of wear such as cracking or discoloration. Alligator and shell cordovan age gracefully and can last longer (3-5 years) if properly maintained. Prolonged exposure to moisture, salt sweat, and UV rays shortens lifespan. MilanoStraps offers an 18-month warranty on its straps.