Glashütte Original · SeaQ

Strap for SeaQ Panorama Date Stainless Steel / Red Gold / Grey / Rubber - Pin

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter43 mm
Reference1-36-13-04-91-06
FamilySeaQ
MovementGlashütte Original caliber 36-13 Hours, Minutes, Seconds | Big Date
CaseRed Gold, Stainless 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 1-36-13-04-91-06

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The SeaQ 1-36-13-04-91-06, seen from the bench

The Glashütte Original SeaQ mounts the automatic caliber 36-13 with hour, minute, second and big date indication. The watch features 21mm lugs and represents the Saxon brand's interpretation of the dive watch. The internal movement ensures the essential functions with the characteristic enlarged date display typical of the manufacture.

Frequently asked questions

What is the lug width of the Glashütte Original SeaQ 1-36-13-04-91-06?

The lug width is 21 mm. Measure this by positioning a digital calliper perpendicular to the case lugs, excluding play in the spring bars. The tolerated range is 20.8–21.2 mm; above 21.3 mm you risk binding, below 20.7 mm you will have excessive play. Do not confuse this with the width of the original strap, which is narrower by design.

Which strap material is most suitable for the Glashütte Original SeaQ 1-36-13-04-91-06?

American alligator is the supreme choice: its geometric grain dialogue with the vertical fluting of the bezel, creating tactile continuity. For accelerated patina, vegetable-tanned calf offers natural bite and rapid ageing. For marine use, FKM (Viton) rubber is the only rational choice: it does not absorb chlorine, does not degrade under UV, and maintains elasticity between -20 and +200 °C. Canvas Cordura NATO provides aesthetic versatility with a deployante clasp in stainless steel.

How do you change the strap on the Glashütte Original SeaQ 1-36-13-04-91-06?

The SeaQ lugs are threaded (not bayonet). Obtain a threaded lug tool and a case holder. Position the watch with the lug side facing upwards, insert the tool into the slot of the stainless steel spring bar and rotate counter-clockwise to remove. Insert the new strap, aligning it perpendicular, then screw manually until resistance, then tighten gently with the tool. Do not force beyond the stopping point.

Are aftermarket 21mm straps compatible with the SeaQ 1-36-13-04-91-06?

Yes, provided they respect the tolerance 20.8–21.2 mm and standard threading (commonly M5 or equivalent). Bespoke straps from specialised ateliers (such as Casati Milano) are calibrated for this specification. Verify that the manufacturer provides information on threading and width tolerance before purchase. Mass-market generic straps may present problematic tolerance variability.

How long does a leather strap last on the SeaQ 1-36-13-04-91-06?

A high-quality leather strap (alligator or vegetable-tanned calf) lasts 4–7 years of daily use, depending on exposure to moisture, UV and washing. FKM rubber, if kept clean and dry between uses, reaches 8–10 years. Full-aniline leather ages better than surface-dyed. To extend life, avoid prolonged immersion (although the watch is waterproof to 300 m), dry the strap after salt water contact, and occasionally apply specific conditioners. A well-maintained strap becomes an aesthetic investment, not a consumable.

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