Zeitwinkel · 39mm Midsize

Strap for 083° Blue

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter39 mm
Reference083° Blue
Family39mm Midsize
MovementZeitwinkel caliber ZW0102 CS 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 39mm Midsize 083° Blue

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The 39mm Midsize 083° Blue, seen from the bench

The Zeitwinkel 39mm Midsize reference 083° Blue mounts the automatic caliber ZW0102 CS with hour, minute, second and date functions. The case has a diameter of 39mm with 18mm lug width. The internal movement is a Zeitwinkel manufacture with full time indication and calendar.

Frequently asked questions

What is the exact lug width of the Zeitwinkel 39mm Midsize 083° Blue?

The lug width of the Zeitwinkel 39mm Midsize 083° Blue is 18 millimetres. This measurement is calculated between the inner points of the case lugs. Always verify the measurement with a digital calliper before ordering an aftermarket strap, positioning the tool on the inner reference points rather than the outer spacing.

Which strap is recommended for the Zeitwinkel 083° Blue?

For the Zeitwinkel 083° Blue, vegetable-tanned alligator straps are ideal, creating formal elegance in harmony with the case's minimalism. Dark brown shell cordovan offers refined aesthetic contrast. For versatility, a NATO strap in technical canvas or taupe-grey calf leather maintains stylistic coherence. High-quality textured FKM rubber straps represent the premium sportive option.

How do I change the strap on the Zeitwinkel 39mm Midsize?

Strap replacement requires a spring bar tool. Insert the curved tip of the tool between the lug and the spring bar, gently pushing downward to compress the spring. Extract the old strap by pulling it laterally. Insert the new strap into the lug ensuring the spring bar locks completely. Verify with a gentle tug that the strap is securely anchored.

Are aftermarket straps compatible with the Zeitwinkel 083° Blue?

Yes, any aftermarket strap with 18mm lug width is compatible with the Zeitwinkel 083° Blue. We recommend verifying compatibility by measuring on your watch before ordering. Artisanal straps from specialist suppliers ensure precise manufacturing tolerances and superior material quality compared to generic catalogue straps.

How long does a leather strap last on this watch?

An artisanal leather strap with vegetable tanning lasts an average of 18–36 months with daily use, varying according to climate, frequency of use, and maintenance. Vegetable-tanned leather ages biologically, developing patina and deeper tonality. Strap replacement is recommended when leather loses elasticity or the buckle shows wear. Store the strap in a dry environment and protect it from prolonged moisture.

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