Glashütte Original · SeaQ

Strap for SeaQ Date Red Gold / Black / Rubber

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
Reference1-39-11-17-91-33
FamilySeaQ
MovementGlashütte Original caliber 39-11 hours, minutes, seconds | date
Year2022
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 1-39-11-17-91-33

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-17-91-33, seen from the bench

The Glashütte Original SeaQ 1-39-11-17-91-33 is a 39.50 mm red gold sports watch featuring the automatic Glashütte Original 39-11 caliber visible through a sapphire caseback. It is certified ISO 6425 for diving to 300 metres and combines Saxon watchmaking tradition with contemporary underwater engineering, with 20 mm lug width. The movement includes hours, minutes, seconds and date functions, beating at 28,800 vibrations per hour with characteristic Glashütte finishing.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-17-91-33?

The lug width of the Glashütte Original SeaQ 1-39-11-17-91-33 is 20 millimetres. This measurement represents the distance between the two internal anchor pins of the lugs on the case. To verify compatibility of an aftermarket strap, measure precisely the space between these points using a digital calliper or graduated ruler, ensuring you cover the entire distance between the pin holes.

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

For the red gold SeaQ, the ideal strap depends on intended use. A high-quality alligator strap with vegetable tanning and fine grain finish enhances the gold's luminosity and creates sporty elegance. Shell cordovan offers aged patina and superior structural rigidity. For aquatic environments, a fluoroelastomeric rubber or NATO strap ensures waterproofness and practicality. Vegetable-tanned calf leather represents a compromise between tactile comfort and sophisticated aesthetics.

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

To change the SeaQ strap, remove the two pins (spring bars) that secure the strap to the lugs. Use a dedicated pin pusher tool or small flathead screwdriver to gently compress the internal spring mechanism of the pin, allowing it to slide outward. Extract the old strap and insert the new one, verifying that the pins snap securely into position. Perform this operation on a soft surface to avoid scratching the caseback or case.

Can I use a generic aftermarket strap for the Glashütte Original SeaQ?

No, it is essential to use straps specifically designed for the 20mm lug width. A strap of different width (for example, 18mm or 22mm) would cause dangerous mechanical play, stress on the case during wear, and risk of damage. Milanostraps.it offers a broad selection of artisanal straps compatible with this model, crafted with attention to dimensional precision and finishing details.

What is the average lifespan of a leather strap for the SeaQ?

The lifespan of a leather strap depends on material, tanning method, and frequency of use. High-quality alligator or calf leather, with proper maintenance, can remain functional for 3–5 years of moderate daily wear. Shell cordovan tends to last longer due to its fibre density. Constant exposure to moisture, perspiration, and UV rays accelerates ageing. Periodic protection with natural wax or specialised oils significantly extends strap life.

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