Mido · Ocean Star

Strap for Ocean Star 200C Stainless Steel / Blue / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceM042.430.11.041.00
FamilyOcean Star
MovementETA caliber C07.621 hours, minutes, seconds | date, day
Year2016
CaseCeramic, 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 Ocean Star M042.430.11.041.00

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Ocean Star M042.430.11.041.00, seen from the bench

The Mido Ocean Star M042.430.11.041.00 is a professional diving watch with a 42.50 mm stainless steel case and 22 mm lug width. It features an ETA C07.621 automatic movement certified as a Chronometer by COSC, with hours, minutes, seconds, date, and day-of-week complications. The ceramic bezel provides corrosion resistance, and the sapphire crystal protects the dial. Water resistance reaches 30 bar (300 meters) with helium valve, suitable for recreational diving and snorkeling.

Frequently asked questions

What is the lug width of the Mido Ocean Star M042.430.11.041.00?

The lug width of the Mido Ocean Star M042.430.11.041.00 is 22 millimetres. This standardised measurement ensures compatibility with a wide range of aftermarket leather and fabric straps. To verify the correct measurement, measure the internal distance between the lug seats: it should be precisely 22mm to guarantee a snug fit without play or deviation.

What strap is recommended for the Mido Ocean Star M042.430.11.041.00?

We recommend a vegetable-tanned leather strap in tobacco brown, with a thickness of 3.5–4 millimetres, paired with a brushed stainless steel deployant clasp. This combination honours the watch's design whilst maintaining harmonious proportions. Alternatively, a deep blue alligator strap or a vegetable-tinted canvas NATO offer elegant and functional alternatives for different wearing contexts.

How do I change the strap on a Mido Ocean Star M042.430.11.041.00?

To change the strap, gently remove the existing one using a spring bar tool to extract the pins from their seats. Align the new strap with the lug holes, reinsert the spring bar pins with steady, gentle pressure, and verify that the strap moves slightly to confirm complete insertion. Ensure the buckle faces downward on the wrist and that the strap sits symmetrically across both lugs.

Can I use an aftermarket strap on this Mido Ocean Star?

Yes, the Mido Ocean Star M042.430.11.041.00 accommodates aftermarket straps of quality construction with a 22mm lug width specification. An artisanal strap allows you to personalise the watch, transforming its aesthetic and functional character according to season and occasion. Always verify that the strap includes appropriately-sized spring bars and that the width is precisely 22 millimetres.

How long does a leather strap last on this watch?

A well-constructed leather strap, whether vegetable-tanned or alligator, typically lasts 3–5 years under regular daily wear. Longevity depends on exposure to sunlight, salt spray, perspiration, and the quality of construction. Vegetable-tanned leather straps develop a natural patina over time, enhancing their aesthetic character. To extend service life, avoid prolonged exposure to unfiltered freshwater and occasionally apply leather-specific conditioning products.

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