# Mido Ocean Star Decompression Worldtimer Review by A.I. WatchMetrics

## Watch Summary
The Mido Ocean Star Decompression Worldtimer is a versatile sports dive watch that combines 300m water resistance and a robust stainless steel construction with an innovative bi-directional bezel featuring a 24-hour worldtime scale for 24 major cities alongside a practical decompression timer, targeting adventure-seeking travelers and professional divers who need global timekeeping on the go; it houses the automatic Caliber 80 movement based on ETA C07.621, delivering an impressive 80-hour power reserve, central seconds, and a date window.

## Overall Watch Rating: 7.7/10.0

**Material Metric (9.3/10.0)** - Premium sapphire crystal with dual-sided AR coating and meticulously brushed/polished stainless steel case finishing matches the build quality of much pricier divers like the Tudor Pelagos.

**Dials & Design Metric (8.9/10.0)** - The gradient black sunray dial with bold lume-filled indices and unique decompression worldtimer bezel offers striking legibility and originality comparable to Blancpain Fifty Fathoms evolutions.

**Movement Metric (8.6/10.0)** - The Caliber 80 provides reliable 80-hour power reserve and solid in-house tweaks over ETA, performing on par with Longines' upgraded workhorses in daily wear.

**Versatility Metric (8.5/10.0)** - Seamlessly transitions from deep dives to international boardrooms thanks to its 300m rating, worldtimer utility, and comfortable 44mm proportions, akin to the Rolex Yacht-Master's adaptability.

**Functions Metric (8.2/10.0)** - Comprehensive hour/minute/seconds/date plus intuitive 24-city worldtime exceeds the utility of standard GMTs like the Seiko Prospex.

**Complications Metric (7.9/10.0)** - The clever bezel-integrated worldtimer and decompression scale add meaningful utility without overwhelming the dial, similar to niche tool watches from Sinn.

**History & Innovation Metric (6.8/10.0)** - Mido's long Swiss heritage shines through in practical innovations like this affordable worldtimer-diver hybrid, echoing Certina's dive evolution but with global timing flair.

**Rarity Metric (5.7/10.0)** - At around $2,900 retail, its limited appeal among worldtimer enthusiasts places it between mass-produced Rolex Subs and boutique microbrand exclusives.

**Brand Metric (5.3/10.0)** - Mido delivers dependable Swatch Group quality at accessible prices, on par with Hamilton's reliable mid-tier Swiss offerings.

## Total Performance Score (TPS): 9.2

## WM Collector Grade: A+

## Performance Insights: Excels in material excellence and versatile complications while the brand and rarity hold it back slightly, delivering outstanding value well above its $2,900 price point.

## TPS Interpretation: Exceptional Value: The watch vastly overdelivers on dive-ready worldtimer functionality and premium finishing for its price, making it a steal for feature-hungry enthusiasts.

## Watch Data
[https://www.mido.com/dw/image/v2/BGZZ_PRD/on/demandware.static/-/Sites-mido-master-catalog/default/dw4d4b4d4e/hi-res/m0264303604100_fr.jpg?sw=800&sh=800&sm=fit] - [main image]; [https://www.mido.com/dw/image/v2/BGZZ_PRD/on/demandware.static/-/Sites-mido-master-catalog/default/dw8e8f8f9a/hi-res/m0264303604100_back.jpg?sw=800&sh=800&sm=fit] - [back image]; [-] - [no specific lume image]; [Ocean Star Decompression Worldtimer] - [Mido]; [https://www.mido.com/en-us/watches/ocean-star-decompression-worldtimer/m0264303604100-ocean-star-decompression-worldtimer.html] - [Mido]; [Ocean Star Decompression Worldtimer] - [Switzerland]; [https://www.mido.com/en-us/watches/ocean-star-decompression-worldtimer/m0264303604100-ocean-star-decompression-worldtimer.html] - [https://www.mido.com/en-us/watches/ocean-star-decompression-worldtimer/m0264303604100-ocean-star-decompression-worldtimer.html]; [-] - [Automatic]; [Caliber 80 (ETA C07.621)] - [1]; [Robust 300m dive watch with bi-directional bezel worldtimer and decompression scale] - [44]; [52.4] - [15.95]; [22] - [300]; [80] - [21600]; [Super-LumiNova] - [25]; [Stainless Steel] - [Sapphire with anti-reflective coating on both sides]; [Bi-directional rotating with 24 cities and decompression scale] - [Solid screw-down]; [Screw-down] - [Stainless steel bracelet]; [Round] - [Black gradient sunray]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [No]; [No] - [No]; [No] - [Yes]; [Yes] - [Yes]; [Yes] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [9.2] - [A+]; [5200];
**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**