Strap for Seamaster Aqua Terra 150M Master Chronometer 34 Stainless Steel / Sedna Gold / MOP / Bracelet

The lug width of the 220.20.34.20.55.001 is 16mm. This measurement is proportionate to the 34mm case and is relatively rare in the aftermarket, requiring straps specifically constructed with lugs calibrated to 16mm to ensure smooth gliding and correct mechanical fit.

For this model we recommend alligator with vegetable tanning (black or brandy) for an elegant aesthetic that enhances the mother-of-pearl and Sedna Gold. Alternatively, natural burgundy shell cordovan offers robustness and patina development over time. For frequent marine environments, an FKM rubber deployant ensures absolute water resistance.

The 220.20.34.20.55.001 uses spring bars fixed to the case. To change the strap it is necessary to extract the spring bars using a specific tool (prying tool or spring bar tool). Position the tip of the tool in the small lateral groove of the bar, apply slight pressure to compress the internal spring, gently extract the bar. Repeat on the opposite side. Proceed in reverse to install the new strap, verifying that the bars click correctly into their seats.

Yes, provided the strap is constructed with a lug width of 16mm and compatible lug width (standard 1.5-2mm). Milano Straps offers straps in this measurement and are built to precise tolerances. Always verify with a digital caliper before purchase, as variations of even 0.5mm can cause gliding issues.

Longevity depends on the tanning method and usage. An alligator strap with vegetable tanning lasts 3-5 years with moderate daily use; shell cordovan resists for 5-7 years due to superior fiber density. Frequent exposure to water, sweat and sunlight shortens the lifespan. Milano Straps offers an 18-month warranty on their straps and restoration services after natural wear.