Strap for Speedmaster Professional Moonwatch Snoopy Award

The 3578.51.00 features lugs of exactly 20mm. This measurement is invariable and corresponds to the internal distance between the two arms of the spring bar. Any strap you wish to pair with it must have a width of 20mm to fit correctly in the lugs and ensure proper anchoring to the case.

The choice depends on usage and personal style. Alligator or calf leather with alligator grain offer elegance and solidity for formal contexts. Vegetable tanning provides a unique patina that develops over time. A rubber or NATO strap is ideal for fully exploiting the watch's instrumental vocation and military certification. Shell cordovan is the premium solution for those seeking rare and durable leather.

The strap is changed by removing the metal spring bars from the case. Each spring bar has a small spring: push it with a pin from one side to make it snap out, then extract the spring bar from the case. Insert the spring bar spring into the new strap, align the spring bar in the lateral holes of the case and push until it clicks into place. It is a simple operation but requires care to avoid scratching the metal. A dedicated tool (strap changing tool) is recommended.

Yes, any strap with an official width of 20mm is compatible with the 3578.51.00. Always verify that the seller explicitly specifies the measurement: even 18mm or 22mm will not work. Custom tailored artisanal straps guarantee perfect compatibility and the ability to choose leather, color, and finishes.

A quality leather strap (alligator, calf, shell cordovan) worn regularly lasts between 2 and 5 years before showing significant signs of wear. Durability depends on frequency of use, exposure to sun and humidity, and care. Vegetable tanning can last longer thanks to its natural structure. A rubber strap resists 5-8 years, while NATO can last decades if made with quality military-grade fabric.