Strap for Senator Moon Phase White Gold / Skeleton / Alligator / Folding

The Senator 1-49-13-15-04-50 requires a strap with a 21mm lug width. This measurement refers to the width of the channel where the strap is inserted between the lugs of the case. To verify compatibility, measure the widest point between the lugs using a ruler placed perpendicular to the lugs: 21mm is the construction standard for this model.

For the Senator 1-49-13-15-04-50 in white gold with a skeleton caseback, we recommend dark alligator (oxidised brown or deep black) to accentuate the contrast with the metal, or vegetable-tanned calf leather for a more dynamic appearance. Bordeaux shell cordovan represents an elegant compromise, developing patina over time. NATO canvas straps are ideal for daily wear, distributing tension away from the case thanks to the double pass-through.

The Senator uses a standard spring bar lug system. Position the watch on a soft cloth with the caseback facing upward. Identify the small hole or lever on the lug where the specialist tool is inserted. Insert the spring bar tool horizontally, gently lift the internal spring and extract the pin from the case. Repeat on the other side. Insert the new strap by aligning one lug first, then press the pin into the opposite lug until you hear a click.

Yes, any strap with a 21mm lug width is compatible with the Senator 1-49-13-15-04-50, provided width tolerances are respected (21mm ± 0.5mm maximum). Many artisanal manufacturers offer custom straps in this size. Verify that the strap thickness does not exceed 4-5mm at the initial curve point to avoid insertion difficulties into the lugs. Straps with a deployant clasp must be at least 19.5cm long to accommodate average wrist adjustment.

Durability depends on the material and usage. A quality calf leather strap can last 3-5 years with daily use, developing patina and character. Alligator, being more resistant to stress, can reach 5-7 years. Shell cordovan, due to its structural density, offers a lifespan of 7-10 years. Factors that shorten lifespan include humidity, continuous direct sunlight exposure, and wrist weight fluctuations (causing micro-tears). Rotating between 2-3 straps significantly extends the life of each by allowing the leather to 'breathe'.