Glashütte Original · SeaQ

Strap for SeaQ Date Red Gold / Black / Synthetic

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference1-39-11-17-91-35
FamilySeaQ
MovementGlashütte Original caliber 39-11 Hours, Minutes, Seconds | Date
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 SeaQ 1-39-11-17-91-35

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-17-91-35, seen from the bench

The Glashütte Original SeaQ features the automatic caliber 39-11 with hour, minute, second and date indication. The model has 20mm lugs and a construction oriented for underwater use. The in-house movement offers power reserve and finishings typical of the Saxon manufacture.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-17-91-35?

The lug width of the Glashütte Original SeaQ reference 1-39-11-17-91-35 is 20 millimetres. This dimension is measured from inner lug to inner lug at the spring bar position. It is essential to verify strap compatibility to ensure perfect fit to the case without lateral play.

Which strap is most suitable for the Glashütte Original SeaQ in rose gold?

For the SeaQ 1-39-11-17-91-35 in rose gold, an alligator on traditional tanning amplifies the mineral character of the case, creating aesthetic harmony. Alternatively, vegetable-tanned calf develops natural patina synchronised with the ageing of the precious metal. For nautical use, a cotton-lined nylon NATO guarantees absolute functionality.

How do you change the strap on the Glashütte Original SeaQ?

To change the strap, remove the spring bars from the lugs using a dedicated tool (spring bar tool) that allows you to compress the elastic bars and slide them from the case's centre pin. Insert the new strap by aligning the 20mm lug width with precision, ensuring the passant slides vertically without asymmetric tension. Proceed with care to avoid scratching the case.

Are aftermarket straps compatible with the SeaQ 1-39-11-17-91-35?

Yes, high-quality aftermarket straps are fully compatible with the SeaQ 1-39-11-17-91-35, provided the lug width corresponds exactly to 20 millimetres. Always verify the technical specifications of the strap before purchase. Straps crafted with artisanal methods and superior finishes maintain aesthetic coherence with the original piece.

What is the lifespan of a leather strap for the Glashütte Original SeaQ?

The lifespan of a leather strap depends on the quality of tanning and usage patterns. A superior-quality alligator or vegetable-tanned calf maintains structural integrity for 4-7 years of regular daily use. Prolonged exposure to humidity, saltwater or UV rays accelerates ageing. Periodic maintenance with specialist leather conditioning creams significantly extends strap durability.

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