Glashütte Original · Senator

Strap for Senator Perpetual Calendar Red Gold / Silver / Alligator

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
Reference100-02-22-05-05
FamilySenator
MovementGlashütte Original caliber 100-02 hours, minutes, seconds | big date, day, leap year, month | moonphase | alarm
CaseRed Gold

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 100-02-22-05-05

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Senator 100-02-22-05-05, seen from the bench

The Glashütte Original Senator features the in-house caliber 100-02 with functions of hours, minutes, seconds, big date, day, month, leap year, moon phases, and alarm. The movement offers a complete annual calendar integrated with a moon phase indicator. The alarm complication adds to the calendar functions for a timepiece with multiple practical utilities.

Frequently asked questions

What is the lug width of the Glashütte Original Senator 100-02-22-05-05?

The lug width of the Glashütte Original Senator 100-02-22-05-05 is precisely 18mm. This measurement, calculated from the inside centre of one lug to the other, is the construction standard for premium Senator models. It ensures harmonious proportions and compatibility with professional artisanal straps. Always verify this dimension before strap purchase.

What is the best strap for the Glashütte Original Senator in red gold?

The ideal strap for the Senator 100-02-22-05-05 is alligator leather with vegetable tanning in grey or cognac brown tones. The regular texture and fine grain reflect the Saxonian elegance of the model, whilst the patina that develops creates a natural dialogue with aged red gold. Shell cordovan represents a superior constructive alternative for those seeking legendary longevity and mirror patina. Pressed rubber remains the practical choice for daily wear without aesthetic compromise.

How do I change the strap on a Glashütte Original Senator 100-02-22-05-05?

Strap replacement requires specific tools: a spring bar tool to extract the lug pins. Position the watch on a soft cloth, gently press the spring inside the pin using the tool, and slide the old strap out. Insert the new strap by aligning the holes with the lugs, then reinsertt the pin. For high-value timepieces such as the Senator, we recommend entrusting the operation to a certified professional at Casati Milano.

Can I use an aftermarket strap on a Glashütte Original Senator 100-02-22-05-05?

Yes, artisanal aftermarket straps are fully compatible with the Senator 100-02-22-05-05, provided they respect the 18mm lug width. Milano Straps offers leather straps (alligator, calf, shell cordovan), NATO and rubber options, all suitable for this reference. The construction quality, tanning and finishing of an aftermarket strap can actually enhance the wearing experience compared to OEM straps, guaranteeing natural patina and aesthetic customisation.

What is the lifespan of an artisanal leather strap for a Glashütte Original Senator?

An artisanal strap made from superior vegetable-tanned alligator leather lasts approximately 5-7 years with regular daily wear, developing extraordinary patina over time. Shell cordovan achieves 10-15 years of active life thanks to superior leather density. Calf leather has intermediate durability (4-6 years). Longevity depends on environmental factors (humidity, sunlight exposure), frequency of use and maintenance (occasional cleaning, avoiding repeated wetting). Casati Milano provides personalised consultation on selection based on individual usage habits.

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.

Request an appointment →

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