# Omega Seamaster Diver 300M Co-Axial Master Chronometer Chronograph Review by A.I. WatchMetrics

## Watch Summary
The Omega Seamaster Diver 300M Co-Axial Master Chronometer Chronograph is a robust dive watch with chronograph functionality, featuring a sporty yet elegant design with a ceramic bezel, wave-patterned dial, and helium escape valve, targeted at adventure enthusiasts and professionals who appreciate precision timing underwater; it stands out with its METAS-certified movement offering exceptional anti-magnetic resistance and a 60-hour power reserve.

## Overall Watch Rating: 7.8/10.0

**Brand Metric (8.5/10.0)** - Omega's prestigious heritage in luxury watchmaking, with iconic models like the Seamaster, places it firmly in the luxury tier, comparable to Rolex in brand recognition and quality.
**History & Innovation Metric (8.2/10.0)** - Omega's long history of pioneering dive watches, including the original Seamaster's role in space and sea exploration, combined with innovations like the Co-Axial escapement, sets a high standard akin to brands like Blancpain.
**Dials & Design Metric (8.0/10.0)** - The distinctive wave dial, skeletonized hands, and bold color options provide a visually striking and functional aesthetic that rivals the design flair of the Rolex Submariner.
**Movement Metric (8.5/10.0)** - The in-house Calibre 9900 automatic chronograph movement with METAS certification offers superior accuracy and durability, outperforming standard ETA-based movements in similar price ranges.
**Complications Metric (7.5/10.0)** - Featuring a column-wheel chronograph and date function, it provides practical complications for timing and daily use, though it lacks more exotic features like a tourbillon found in higher-end pieces.
**Material Metric (7.8/10.0)** - Constructed from grade 5 titanium or stainless steel with a sapphire crystal and ceramic bezel, the materials ensure robustness and scratch resistance, on par with premium divers like the Tudor Pelagos.
**Functions Metric (7.2/10.0)** - With 300m water resistance, a unidirectional bezel, and chronograph subdials, it excels in dive and timing functions, similar to the functionality of the Breitling Superocean.
**Versatility Metric (7.0/10.0)** - This watch transitions well from underwater adventures to casual wear but is less suited for formal occasions, much like the versatility of the Omega Speedmaster.
**Rarity Metric (5.5/10.0)** - As a regularly produced model in Omega's lineup, it's not particularly rare, though limited editions can elevate this, comparable to the availability of the Cartier Santos.

## Total Performance Score (TPS): 3.2

## WM Collector Grade: B-

## Performance Insights: Strong in brand prestige, movement quality, and design, but weaker in rarity and versatility, offering good value relative to its implied price of around $5,500.

## TPS Interpretation: Good Value: The watch delivers high-end performance and features that exceed expectations for its price point, making it a smart choice for enthusiasts.

## Watch Data
[Picture URL] - https://www.omegawatches.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/o/m/omega-seamaster-diver-300m-chronograph-black.jpg; [backPicture] - https://www.omegawatches.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/o/m/omega-seamaster-diver-300m-chronograph-caseback.jpg; [lumePicture] - https://www.omegawatches.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/o/m/omega-seamaster-diver-300m-chronograph-lume.jpg; [Nickname] - Seamaster Chrono; [Brand] - Omega; [Model] - Seamaster Diver 300M Co-Axial Master Chronometer Chronograph; [Country] - Switzerland; [Product Link] - https://www.omegawatches.com/en-us/watch-omega-seamaster-diver-300-m-co-axial-master-chronometer-chronograph-44-mm-21030445101001; [reviewLink] - https://www.hodinkee.com/articles/omega-seamaster-diver-300m-chronograph-review; [Movement Type] - Automatic; [Movement Name] - Omega Calibre 9900; [# Secondary] - 0; [watchDescription] - A high-performance dive chronograph with METAS certification; [caseWidth] - 44; [lugToLugLength] - 52; [thickness] - 17; [lug] - 21; [waterResist] - 300; [powerReserve] - 60; [beatFrequency] - 25200; [lume] - Super-LumiNova; [jewels] - 54; [caseMaterial] - Stainless Steel; [watchGlass] - Sapphire; [Bezel] - Ceramic Unidirectional; [caseback] - Screw-in; [Crown] - Screw-down; [Strap] - Stainless Steel Bracelet; [Shape] - Round; [Dial] - Wave Pattern; [Seconds] - Yes; [Date] - Yes; [Calendar] - No; [Chiming] - No; [Chronograph] - Yes; [Compass] - No; [dateCompilation] - No; [DigitalDisplay] - No; [Dress] - No; [Field] - No; [GMT] - No; [Mechanical Alarm] - No; [Moonphase] - No; [Tourbillon] - No; [worldTimer] - No; [powerReserveIndicator] - No; [Diver] - Yes; [Pilot] - No; [racing] - No; [Skeleton] - No; [Vintage] - No; [StyleFormal] - Low; [StyleCasual] - High; [StyleSports] - High; [StyleTravel] - Medium; [StyleAdventure] - High; [StyleCollector] - Medium; [StyleTool] - High; [StyleStatement] - Medium; [StyleVintage] - Low; [StyleSmart] - No; [StyleCustom] - No; [TPS_new] - 7.8; [TPSgrade] - B-; [TPSimpliedPrice] - 5500;

**A.I. WatchMetrics Review v37.4 Grok 4. December 16, 2025.**