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The Ocean Star 200C is Mido's workmanlike dive watch at a price point where most competitors cut corners. At 40.5mm with a silicon hairspring and 80-hour power reserve, it delivers more movement technology than the sticker price suggests. This is a tool watch that earns its keep.
Mido relaunched the Ocean Star line in the late 2010s as a coherent dive family, with the 200C arriving as the entry-level water-resistant offering within that range. The caliber inside is ETA's C07.621 Si, a silicon-hairspring variant of the well-regarded Caliber 80 base movement, giving it antimagnetic resistance without a soft-iron cage. Mido sits within the Swatch Group alongside ETA, so access to this movement is a structural advantage the brand rarely advertises.
The 200C has stayed in production since 2020 with minimal changes, which signals that it found its market quickly. It occupies a narrow band where swiss movement quality meets accessible pricing, a gap that few brands fill honestly.
The bezel insert is aluminum, not ceramic, so expect wear and fading over years of hard use. The bracelet on the M042.430.11.041.00 is functional but finishing quality is noticeably mid-grade, with brushed links that scratch easily. Lug width is 22mm, which gives strap options, but the integrated taper means some aftermarket straps will look awkward at the case.
The crown is not screw-down, which is unusual for a 200m-rated watch and worth knowing if you plan to dive seriously. Water resistance ratings assume the seals are intact; if you are buying pre-owned, factor in a pressure test before any real dive use.
New retail sits around $695-750 USD depending on retailer and configuration. Pre-owned examples trade in the $450-550 range, which is where the value proposition sharpens considerably. Comparable 200m dive watches from Tissot or Hamilton at this price do not offer a silicon hairspring, making the Mido a quiet outlier in the segment.
Resale is stable but not strong, so buy this to wear it, not to flip it.
The Caliber 80 Si (ETA C07.621 Si) is a robust, well-documented movement with ETA service infrastructure behind it. Standard service intervals run 5-7 years, and any competent watchmaker familiar with ETA movements can handle it. Swatch Group's parts availability makes this one of the easier movements to service outside of the manufacturer.
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The Si designation on the caseback confirms the silicon-hairspring Cal. 80 Si variant; without it the watch has the standard Cal. 80.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| caseback | Si designation | Si text on the caseback confirms silicon hairspring Cal. 80 Si variant | No Si designation; standard Cal. 80 without silicon hairspring |
| case | Screw-down crown | Screw-down crown engages and disengages smoothly; correct for 200m rating | Non-functioning screw-down; crown threads stripped or incorrect crown installed |
| dial | Ocean Star 200C dial text | Ocean Star 200C designation and correct depth rating text | Incorrect depth rating text; wrong sub-reference dial |
