Glashütte Original · SeaQ

Strap for SeaQ Date Stainless Steel / Diamond / Blue / Synthetic - Folding

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
Reference1-39-11-09-82-34
FamilySeaQ
MovementGlashütte Original caliber 39-11 Hours, Minutes, Seconds | Date
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 SeaQ 1-39-11-09-82-34

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-09-82-34, seen from the bench

The Glashütte Original SeaQ features the in-house caliber 39-11 with hours, minutes, seconds, and date indication. The reference 1-39-11-09-82-34 has 20mm lugs for the strap. The automatic movement characterizes this timepiece from the German Glashütte manufacture.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-09-82-34?

The lug width of the Glashütte Original SeaQ is 20 mm. This measurement is determined by the proportional relationship between the 39.50 mm case diameter and the specific construction of the lug bars. To verify accuracy, measure with a digital calliper the internal distance between the two attachment holes of the lug: it must correspond exactly to 20 mm. This width allows the use of straps in full-grain leather, dense textiles, and technical polymers up to 4.5-5 mm in thickness.

What is the best strap for the Glashütte Original SeaQ?

The choice depends on the intended use and context. For formal or daytime situations, alligator leather dyed in navy blue or graphite black enhances the technical seriousness without competing with the two-tone dial. For frequent immersions or saline environments, full-vegetable-tanned calfskin or vulcanised rubber (FKM, EPDM) offer superior biological resistance and minimal maintenance. NATO straps in Cordura fabric remain a tactical and versatile solution. We recommend avoiding synthetic or varnished leathers, which undermine the technical identity of the model.

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

Position the watch on a soft support to avoid scratches. Identify the two lug attachment pins (one on each side of the case). Use a pin remover tool or a small screwdriver to gently push the pin from the underside of the lug until it comes out completely. Once the first pin is removed, slide off the old strap and insert the new one by aligning the holes. Reinsert the pin by pushing until it clicks into place. Repeat the operation for the second side. Check the final alignment before wearing the watch.

Are compatible aftermarket straps available for the Glashütte Original SeaQ 1-39-11-09-82-34?

Yes, MilanoStraps offers artisanal straps in 20 mm width specifically calibrated for the Glashütte Original SeaQ. The range includes alligator in various shades (navy blue, black, burgundy), vegetable-tanned calfskin, NATO straps in technical fabric, and vulcanised rubber. Each strap is supplied with spare pins and mounting instructions. It is possible to customise the strap online by selecting colour, material, and finish of the deployante buckle in brushed or polished steel.

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

A high-quality full-grain leather strap (alligator or vegetable-tanned calf) on a sports watch like the SeaQ has an average lifespan of 3-5 years if worn regularly and with proper maintenance. Longevity depends on exposure to moisture, perspiration, UV rays, and the frequency of immersions. Vegetable tanning offers progressive patina development and superior biological resistance compared to synthetic tannins. To maximise lifespan, we recommend drying the watch after contact with saltwater, avoiding prolonged exposure to extreme humidity, and occasionally applying a neutral conditioner. A vulcanised rubber strap, by contrast, maintains its properties unaltered for 5-7 years with minimal maintenance.

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