# Doxa Sub 300T Review by A.I. WatchMetrics

## Watch Summary
The Doxa SUB 300T is a robust professional dive watch with a signature cushion-shaped Grade 2 titanium case, vibrant unidirectional ceramic bezel featuring the brand's unique no-decompression scale, highly legible sunray dial with bold sword hands and oversized indices slathered in Super-LumiNova, powered by the workhorse Sellita SW200-1 automatic movement with 38 hours of power reserve, appealing to serious underwater adventurers and heritage-focused tool watch collectors who value function over flash.

## Overall Watch Rating: 6.8/10.0

**Dials & Design Metric (9.0/10.0)** - Iconic cushion profile, explosive lume, and purposeful bezel markings deliver exceptional legibility and character, rivaling top divers like the Blancpain Fifty Fathoms.

**Material Metric (9.5/10.0)** - Lightweight Grade 2 titanium case paired with sapphire AR crystal and ceramic bezel offers premium durability and scratch resistance beyond typical steel divers like the Omega Seamaster.

**History & Innovation Metric (8.8/10.0)** - Pioneering the modern pro dive watch in 1967 with its cushion design and decompression bezel, it holds a legacy on par with the Rolex Submariner's impact.

**Versatility Metric (7.0/10.0)** - Excels in aquatic sports and casual wear but limited by its bold tool aesthetic for formal settings, similar to the Sinn U50.

**Brand Metric (6.0/10.0)** - Doxa commands respect as a Swiss dive specialist with enthusiast appeal, on par with Sinn or Zodiac in the high-premium segment.

**Rarity Metric (6.6/10.0)** - At its $5,400 price point in unlimited production, it offers accessible exclusivity akin to a mid-range Tudor Black Bay.

**Movement Metric (5.3/10.0)** - The Sellita SW200-1 provides reliable in-house-like performance with date but lacks the refinement of a Grand Seiko or ETA 2892.

**Functions Metric (4.7/10.0)** - Basic timekeeping plus date suffices for a diver but trails multifunction peers like the Zodiac Super Sea Wolf.

**Complications Metric (3.9/10.0)** - Simple date window adds utility without complexity, standard for the category like most Seiko Prospex divers.

## Total Performance Score (TPS): 4.0
## TPS Interpretation: Fair Value: The watch delivers standout design and materials with proven dive heritage but is held back by a basic movement and functions relative to its premium pricing.
## WM Collector Grade: C
## Performance Insights: Excels in dials, materials, history, and design for tool watch fans, but movement and functions underperform versus price, suggesting better value on the secondary market around $3,200.

## Watch Data
[Picture URL] - https://doxawatches.com/cdn/shop/files/DOXA_SUB300T_8227010120_1.png?v=1690321471; [backPicture] - N/A; [lumePicture] - N/A; [Nickname] - Sub 300T; [Brand] - Doxa; [Model] - SUB 300T; [Country] - Switzerland; [Product Link] - https://us.doxawatches.com/collections/sub-300t/products/sub-300t-conquest-ref-822-70-101-20; [reviewLink] - N/A; [Movement Type] - Automatic; [Movement Name] - Sellita SW200-1; [# MSRP] - 5400; [# Secondary] - 4000; [# Production] - Unlimited; [watchDescription] - Cushion-shaped titanium dive watch with ceramic bezel, Super-LumiNova dial, and 300m water resistance; [caseWidth] - 42.3; [lugToLugLength] - 49; [thickness] - 13.3; [lug] - 22; [waterResist] - 300; [powerReserve] - 38; [beatFrequency] - 28800; [lume] - Super-LumiNova; [jewels] - 26; [caseMaterial] - Grade 2 Titanium; [watchGlass] - Sapphire AR; [Bezel] - Unidirectional ceramic; [caseback] - Solid titanium screw-down; [Crown] - Screw-down; [Strap] - Titanium bracelet; [Shape] - Cushion; [Dial] - Sunray; [caseShape] - Cushion; [Seconds] - 1; [Date] - 1; [Calendar] - 0; [Chiming] - 0; [Chronograph] - 0; [Compass] - 0; [dateCompilation] - 0; [DigitalDisplay] - 0; [Dress] - 0; [Field] - 0; [GMT] - 0; [Mechanical Alarm] - 0; [Moonphase] - 0; [Tourbillon] - 0; [worldTimer] - 0; [powerReserveIndicator] - 0; [Diver] - 1; [Pilot] - 0; [racing] - 0; [Skeleton] - 0; [Vintage] - 0; [StyleFormal] - 0; [StyleCasual] - 1; [StyleSports] - 1; [StyleTravel] - 0; [StyleAdventure] - 1; [StyleCollector] - 1; [StyleTool] - 1; [StyleStatement] - 0; [StyleVintage] - 0; [StyleSmart] - 0; [StyleCustom] - 0; [TPS_new] - 4.0; [TPSgrade] - C; [TPSimpliedPrice] - 3200;

**A.I. WatchMetrics Review v37.10 Grok 4 Fast. December 21, 2025.**