Glashütte Original · SeaQ

Strap for SeaQ Date Stainless Steel / Black / Bracelet

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
Reference1-39-11-06-80-70
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 1-39-11-06-80-70

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The SeaQ 1-39-11-06-80-70, seen from the bench

The Glashütte Original SeaQ 1-39-11-06-80-70 is a 39.50 mm stainless steel sports watch featuring the automatic caliber 39-11 movement with three-quarter platinum plate, Breguet hairspring and natural escapement with white gold pallet fork. The watch includes hours, minutes, seconds and date functions. The 20 mm lug width is specifically proportioned to the case diameter and overall geometry for visual balance.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-39-11-06-80-70?

The lug width of the Glashütte Original SeaQ is 20 mm. This specific measurement derives from the proportions of the 39.50 mm case and its generous lugs-to-lugs distance. Always verify with a calliper the internal space between the lugs before purchasing an aftermarket strap.

Which strap is best suited for the Glashütte Original SeaQ?

It depends on intended use. For discreet elegance: medium-brown alligator or calf leather with vegetable tanning. For sport versatility: NATO straps in heavy canvas, grey or navy. For diving and intensive marine environments: technical elastomers and fluorosiloxane rubbers. Choice must be consciously aligned with the identity you wish to communicate through the watch.

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

The Glashütte Original SeaQ features straight lugs of 20 mm. To replace the strap: (1) Obtain a spring bar removal tool (small metal lever); (2) Position the lever beneath one spring bar (the pin holding the strap); (3) Press gently upward to compress the internal spring and slide the pin out from the lug; (4) Repeat for the other side; (5) Insert the new strap by threading the spring bars into their seats and verifying secure attachment. Operation recommended under adequate lighting.

Is the Glashütte Original SeaQ strap compatible with other 20 mm watches?

Yes, in terms of lug width. A 20 mm strap is compatible with any watch featuring 20 mm lugs. However, aesthetic compatibility depends on case diameter, lugs-to-lugs distance, and dial design. A strap specifically designed for the SeaQ may not be visually coherent on smaller cases or those with different proportions. We recommend always verifying proportional harmony before purchase.

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

Durability depends on material and usage. High-quality alligator and calf leather with vegetable tanning maintain structural integrity for 5-7 years of moderate daily wear; durability improves with occasional or seasonal use. Factors reducing lifespan include: prolonged exposure to humidity, frequent perspiration, extreme temperatures, immersion in fresh or salt water. Heavy canvas NATO straps have superior longevity (8-10 years) because textile material resists wear better. High-quality technical elastomers maintain physical properties for 5-8 years.

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