Glashütte Original · Senator

Strap for Senator Diary Stainless Steel / Black / Alligator / Folding

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter42 mm
Reference100-13-02-02-04
FamilySenator
MovementGlashütte Original caliber 100-13 hours, minutes, seconds | big date | alarm
Year2015
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Senator 100-13-02-02-04

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Senator 100-13-02-02-04, seen from the bench

The Glashütte Original Senator features the in-house caliber 100-13 with functions including hours, minutes, seconds, big date, and alarm. The movement showcases the distinctive German architecture with three-quarter plates and typical Saxony decorations. The watch belongs to the Senator collection, representing the brand's dress watch line.

Frequently asked questions

What is the lug width of the Glashütte Original Senator 100-13-02-02-04?

The Glashütte Original Senator 100-13-02-02-04 features a lug width of 18 millimetres, measured between the spring bar attachment points on the case. Always verify compatibility with 18mm straps before purchase to ensure proper fit and preserve the original proportions of the watch.

What is the best strap for the Senator 100-13-02-02-04?

The ideal strap depends on intended use and personal preference. For formal occasions, we recommend alligator leather or vegetable-tanned calf in brown, burgundy, or black tones. For versatility, a silk or wool NATO offers practicality. For humid environments or sports, synthetic rubber maintains aesthetic integrity and durability. Compatibility with 18mm lugs is essential.

How do I change the strap on the Glashütte Original Senator 100-13-02-02-04?

You'll need a dedicated spring bar tool. Locate the small metal pins at the ends of the case (lugs). Insert the tool tip into the tiny hole beneath each pin to release the internal spring, remove the old strap, and insert the new one until the spring clicks into place. If you lack experience, consult a qualified watchmaker to avoid scratching the case.

Is the Senator 100-13-02-02-04 strap compatible with other 18mm watches?

Yes, any strap with 18mm lugs will mechanically fit the Senator 100-13-02-02-04 case. However, consider proportions and style carefully: an overly heavy or bold strap may compromise the aesthetic balance of the Saxonian design. Milano Straps curates selections to ensure visual harmony.

How long does a leather strap last on this watch?

A quality leather strap with vegetable tanning and noble materials such as alligator or shell cordovan typically lasts 3–5 years with regular wear. Longevity depends on: frequency of use, sun exposure, humidity, and maintenance care. Leather fears excessive moisture and direct UV rays. Regular maintenance—gentle cleaning and conditioning with specialist creams—significantly extends strap lifespan.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only