Strap for Seamaster Aqua Terra 150M Shades Master Chronometer 34 Moonshine Gold / Champagne / Bracelet

The lug width of the 220.50.34.20.08.001 is 16mm, a rare dimension in the watch industry. This means the case lugs are spaced exactly 16mm apart. Measuring the lug width with a caliper on the inside of the lugs will confirm this dimension. Do not confuse lug width with the case diameter, which in this model is 34mm.

For the 220.50.34.20.08.001, an alligator strap with vegetable tanning is the most sophisticated choice: the regular scale pattern and the patina that develops over time enhance the warm tone of Moonshine Gold. Calf leather is an elegant and more durable alternative for daily wear. Shell cordovan is the premium option for those seeking maximum density and a luminescent texture. Avoid low-quality synthetics that would betray the aesthetic harmony of the watch.

To change the strap, you need a dedicated tool to remove the spring bars. Position the watch on a soft cloth, locate the two metal pins that connect the strap to the case lugs, and use an appropriate tool to compress them slightly downward, allowing the strap to slide off. Replace with the new 16mm strap, ensuring the spring bars are securely positioned in the lugs. If you lack experience, it is advisable to consult a professional jeweler.

Yes, any strap with a 16mm lug width is compatible with the 220.50.34.20.08.001. Online and at specialized ateliers you will find straps in alligator, calf, shell cordovan, and premium rubber specific to this dimension. Milano Straps offers a selection of customizable 16mm straps, as well as the bespoke service of the Casati Milano atelier for completely custom creations.

The lifespan depends on the material and usage. An alligator strap with vegetable tanning lasts on average 3-5 years of daily wear, developing a fascinating patina over time. Shell cordovan has a longer lifespan, up to 8-10 years. Vegetable-tanned calf leather varies between 2-4 years. Maintenance is crucial: avoid immersion in water (although the watch is waterproof, the strap is not), occasionally apply a nourishing emulsion, and let it air dry naturally. The Casati Milano atelier offers an 18-month warranty on made-to-measure straps.