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
Reference1-39-11-17-91-34
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 1-39-11-17-91-34

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-17-91-34, seen from the bench

The Glashütte Original SeaQ features the automatic Caliber 39-11 with hour, minute, second and date indication. The watch has 20mm lugs and a construction oriented towards underwater use. The in-house movement guarantees precision and reliability in the essential functions.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-17-91-34?

The lug width of the Glashütte Original SeaQ is 20 mm, measured as the distance between the horizontal lugs of the case. This dimension accommodates generously-sectioned straps, perfectly proportioned to the 39.50 mm case diameter. It is essential to verify this measurement before purchasing aftermarket straps, as even minor variations of 1-2 mm would result in functional incompatibility.

Which strap is most suitable for the rose gold SeaQ?

For a rose gold SeaQ, genuine alligator represents the most coherent choice in aesthetic and tactile terms. A toasted alligator with mid-dark patina dialogues naturally with the warmth of rose gold, preserving the classic-sports identity. Alternatively, cherry-red shell cordovan offers extraordinary density and ageing, transforming over time into burgundy tones that enhance the precious case.

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

Strap replacement requires a spring bar tool (fork-shaped implement to remove elastic pins). Light pressure is needed to compress the internal pin, then extract it from the case lug. Once both sides are released, the old strap detaches. Fitting the new strap involves aligning it with the lugs and re-inserting the pins with gentle pressure until the click-lock engages. The operation should be performed on a soft surface to avoid scratching.

What type of aftermarket strap is compatible with the SeaQ?

Any strap with exactly 20 mm lug width is compatible. Recommended materials include alligator, shell cordovan, vegetable-tanned calf, robust fabric NATO, and technical rubber. All these materials adapt perfectly to the case lugs without creating mechanical strain. It is important to verify that the spring bar threads are standard, a requirement met by nearly all quality artisanal straps.

How long does a leather strap last on the Glashütte Original SeaQ?

Longevity depends on use and material. Alligator and shell cordovan, thanks to their fibrous density, guarantee 3-5 years of daily wear before showing visible fatigue (tears, cracks). Vegetable-tanned calf, being softer, offers similar duration but requires more regular maintenance with dedicated creams. Technical rubber can last 2-3 years under intensive marine conditions. Longevity increases significantly if the strap is removed daily and not subjected to constant stress.

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