# Sinn EZM 1.1 S Review by A.I. WatchMetrics


## Watch Summary
The Sinn EZM 1.1 S is a stealthy extreme tool watch designed as a mission timer for German combat divers (Kampfschwimmer), featuring a fully blacked-out aesthetic with matte dial, bold white indices for legibility, and unique technologies like Ar-Dehumidifying and black hard coating; powered by the Sellita SW 200-1 automatic movement with 38 hours of power reserve, it targets serious adventurers, military enthusiasts, and collectors who demand bombproof durability in a 41mm package.

## Overall Watch Rating: 7.0/10.0

**History & Innovation Metric (8.8/10.0)** - Sinn's pioneering Ar-Dehumidifying Technology and military heritage place it alongside legendary tool watches like the Omega Seamaster Ploprof in functional innovation.
**Dials & Design Metric (9.2/10.0)** - The matte black dial with oversized white lume indices delivers superior low-light readability, comparable to the best military-spec field watches from Marathon or Luminox.
**Material Metric (9.1/10.0)** - Premium black hard-coated stainless steel, double-sided AR sapphire, and dehumidifying caseback offer top-tier durability akin to high-end dive watches like the Blancpain Fifty Fathoms.
**Versatility Metric (8.7/10.0)** - With 1,000m water resistance, anti-magnetic shielding, and stealth styling, it excels across diving, adventure, and tactical scenarios much like a modernized Rolex Military Sub.
**Movement Metric (7.8/10.0)** - The robust Sellita SW 200-1, enhanced by Sinn's shock resistance and fine regulation, matches the reliability of movements in Tudor Pelagos divers.
**Brand Metric (6.7/10.0)** - As a high-premium German specialist in instrument watches, Sinn holds steady against peers like Oris or Zodiac in enthusiast circles.
**Rarity Metric (6.3/10.0)** - Priced at $4,100 with steady production, it provides accessible exclusivity similar to other boutique tool watches from Ball or Marathon.
**Functions Metric (5.2/10.0)** - Core timekeeping with date and exceptional legibility suits daily tool use like a Seiko Prospex but lacks added utilities like GMT.
**Complications Metric (1.2/10.0)** - Minimal beyond a basic date window, it trails feature-rich alternatives like the Longines HydroConquest chronograph.

## Total Performance Score (TPS): 4.2
## TPS Interpretation: Modest Value: Advanced materials and extreme specs compensate for basic time-only functions relative to its premium pricing.
## WM Collector Grade: B-
## Performance Insights: Shines in design, materials, versatility, and innovation for tool watch fans, offering solid performance versus an implied price of $2,800 where simpler functions align better with expectations.

## Watch Data
[Picture URL] - https://www.sinn.de/wp-content/uploads/EZM-1.1-S_01.jpg; [backPicture] - https://www.sinn.de/wp-content/uploads/EZM-1.1-S_02.jpg; [lumePicture] - https://www.fratellowatches.com/wp-content/uploads/2021/11/Sinn-EZM-1.1-S-lume.jpg; [Nickname] - Stealth Mission Timer; [Brand] - Sinn; [Model] - EZM 1.1 S; [Country] - Germany; [Product Link] - https://www.sinn.de/en/watches/collection/ezm/ezm-1-1-s.html; [reviewLink] - -; [Movement Type] - Automatic; [Movement Name] - Sellita SW 200-1; [# MSRP] - 4100; [# Secondary] - 3700; [# Production] - Unlimited; [watchDescription] - Black hard-coated stainless steel mission timer for combat divers with 1000m WR, Ar-Dehumidifying Technology, and extreme anti-magnetic properties; [caseWidth] - 41.0; [lugToLugLength] - 49.0; [thickness] - 14.7; [lug] - 22.0; [waterResist] - 1000; [powerReserve] - 38; [beatFrequency] - 28800; [lume] - Super-LumiNova X1 GL C1; [jewels] - 26; [caseMaterial] - Stainless steel, black hard-coated and bead-blasted; [watchGlass] - Sapphire, antireflective both sides; [Bezel] - Fixed, black hard-coated; [caseback] - Sapphire, Ar-Dehumidifying Technology; [Crown] - Screwable, black-coated; [Strap] - Textile; [Shape] - Round; [Dial] - Matte black; [caseShape] - Round; [Seconds] - 1; [Date] - 1; [Calendar] - 0; [Chiming] - 0; [Chronograph] - 0; [Compass] - 0; [dateCompilation] - 0; [DigitalDisplay] - 0; [Dress] - 0; [Field] - 1; [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] - 4.2; [TPSgrade] - B-; [TPSimpliedPrice] - 2800;

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