Glashütte Original · SeaQ

Strap for SeaQ Date Stainless Steel / Green / Rubber - Pin

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
Reference1-39-11-13-63-06
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 1-39-11-13-63-06

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-13-63-06, seen from the bench

The Glashütte Original SeaQ 1-39-11-13-63-06 marks the return of the Dresden manufacture to German diving watch tradition after 1945. The stainless steel case measures 39.50 mm with a 20 mm lug width, housing the in-house caliber 39-11 visible through the sapphire caseback. Rated to 300 meters water resistance with unidirectional rotating bezel, the watch features 29 jewels, anchor escapement, and a 72-hour power reserve at 28,800 vibrations per hour.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-13-63-06?

The lug width of the SeaQ is 20 millimetres. This measurement must be verified using a digital calliper positioned horizontally between the inner centres of the two lug attachments on the case. The 20mm specification is precise to this model and requires straps calibrated to this exact dimension to avoid play in the spring bar slots.

Which strap would you recommend for the Glashütte Original SeaQ?

For the SeaQ we recommend straps in vegetable-tanned alligator (natural grain that develops patina with time), caramelised calf leather in cognac or black tones, or shell cordovan for those seeking a glass-like finish over years of wear. If the watch will be submerged regularly, FKM rubber in black or anthracite is the technically correct choice, as it resists salt water absorption and maintains elasticity over extended periods.

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

Remove the SeaQ from your wrist. Position the watch horizontally on a soft surface. Using a spring bar tool, compress the internal spring of the lug pin: insert the flat tip into the small slot on the spring, push towards the case edge and lift the free end of the pin. Repeat on the opposite side. Install the new strap by reversing the procedure, ensuring the pins engage correctly in the case slots.

Is an aftermarket strap compatible with the SeaQ 1-39-11-13-63-06?

Yes, provided the strap is precisely 20mm in lug width. Artisan-quality aftermarket straps in alligator, calf, shell cordovan or rubber are fully compatible. Always verify that the slots are in stainless steel to resist marine environments, and that the buckle or deployante is proportioned to the case diameter (39.50mm).

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

A quality leather strap (alligator, calf with vegetable tanning, shell cordovan) typically lasts 8–15 years with daily wear, depending on tannage and humidity exposure. FKM rubber lasts 10–12 years. Durability increases if the strap is not subjected to daily submersion; conversely, salt water accelerates ageing. A well-maintained strap can exceed 20 years with periodic reconditioning.

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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