Zeitwinkel · 39mm Midsize

Strap for 188° Silver

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
Reference188° Silver
Family39mm Midsize
MovementZeitwinkel caliber ZW0102 KS Hours, Minutes, Small 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 188° Silver

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The 39mm Midsize 188° Silver, seen from the bench

The Zeitwinkel 39mm Midsize reference 188° Silver features the ZW0102 KS caliber with hour, minute, small second and date indication. The case has a diameter of 39mm with 18mm lugs. The movement offers the essential timekeeping functions with a date complication.

Frequently asked questions

What is the lug width of the Zeitwinkel 39mm Midsize 188° Silver?

The Zeitwinkel 188° Silver features 18mm lug width, a specific measurement for this model that determines aftermarket strap compatibility. To verify the correct measurement, position a calliper on the inner side of the lug where it connects to the case, measuring perpendicular to the case.

What is the best strap for the Zeitwinkel 188° Silver?

The ideal strap depends on usage and aesthetic preference. A brushed alligator in dark brown complements the Silver case's minimalist approach; vegetable-tanned leather ages beautifully alongside the steel. For daily wear, grey-toned rubber or black NATO maintain the model's sobriety without compromise.

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

Strap changes are performed through spring bars. Remove the bar from the lower lug using a spring bar tool, extract the old strap, align the new strap's holes with the case, and reinsert the spring bar. Ensure the bar is fully seated in both lugs before wearing the watch.

Is there an aftermarket strap compatible with the Zeitwinkel 188° Silver?

Yes. Milanostraps.it offers a complete collection of 18mm straps compatible with your Zeitwinkel: leather (alligator, calf, shell cordovan), textile NATO, and technical rubber. All straps are pre-assembled for immediate shipment and customisable online according to your colour and finish preferences.

How long does a leather strap last on a watch like the Zeitwinkel?

Leather strap lifespan depends on usage, climate, and material quality. Vegetable-tanned calf of artisanal quality typically resists 3–5 years of daily wear, developing desirable patina. Alligator lasts longer (5–7 years). Rubber and textile NATO are more resistant to atmospheric agents but lose elasticity after 2–3 years of intensive use.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only