Share, Research, Rate: Watches & Collections
A.I. Reviews v37.5 (refreshed with Grok 4.1 Fast)
Follow for Updates:
Model Name:
Sinn 105 St Sa UTC
Watch added to favourite list
Reference:
105.02
Price ($)
$
2100
Country:
Germany
A.I. Rating
8.1
Crowd Rating:
1514
Watch Description
A technical, sporty look complemented by a diverse range of functions: with this watch, we’ve managed to combine uncompromising function and high-quality design in a whole new way. It’s not only the reduced, contemporary form that wins over watch experts, but also the fact that the timepiece can be used as a versatile instrument.
Using the bidirectional rotating bezel with 24-hour ratcheting, you can set up a second time zone. As a result, adjusting the local time only takes a few seconds, without you having to adjust the orange UTC hand using the crown. Of course, you can also set the UTC hand in the conventional way using the crown and leave the rotating bezel in its initial position. The arrow-shaped UTC hand can also be used to roughly determine cardinal points, when the current position of the sun is visible. If you’re located in the northern hemisphere, position the dial horizontally and turn the watch so that the 12-hour hand (ignoring daylight savings time) points to the sun. The 24-hour hand then points to the north.
The rotating bezel itself has a captive connection to the bead-blasted case. Its Black Hard Coating on a TEGIMENT Technology basis lends the watch a professional overall look.
The dial comes in matt black with accents in orange. And take the time to have a closer look at all the details of the mechanical movement through the anti-reflective transparent case back made from sapphire crystal.
Product Link:
41
47.4
0
11.9
200
Steel - 316L
Round
Sapphire
?
Automatic
SW 330
42
Black
A.I. Watch Review:
# Sinn 105 UTC St Sa Review by A.I. WatchMetrics
## Watch Summary
The Sinn 105 UTC St Sa is a robust German pilot-style tool watch with UTC functionality via a bidirectional 24-hour bezel, housed in a TEGIMENT-hardened submarine steel case with sapphire crystal, powered by the automatic Sellita SW 330-1 movement offering a 42-hour power reserve, ideal for adventure-seeking travelers and professionals needing legible, durable timekeeping under tough conditions.
## Overall Watch Rating: 8.1/10.0
**Material Metric (9.5/10.0)** - Exceptional use of submarine steel with TEGIMENT hardening and double-sided AR sapphire surpasses typical luxury divers like the Omega Seamaster.
**Dials & Design Metric (9.0/10.0)** - Pristine black dial with bold luminous indices and railway minute track delivers outstanding legibility akin to top IWC pilot watches.
**History & Innovation Metric (8.8/10.0)** - Decades of aviation heritage combined with proprietary technologies like Ar-Dehumidifying and captive bezel rivals the innovative legacy of Breitling.
**Versatility Metric (8.8/10.0)** - 200m water resistance, interchangeable straps, and pilot/UTC features make it as adaptable as a Tudor Black Bay GMT for daily wear to expeditions.
**Functions Metric (8.5/10.0)** - Solid array of time, date, and dual-timezone tracking performs like well-equipped mid-tier travelers such as the Glycine Airman.
**Movement Metric (8.0/10.0)** - The reliable Sellita SW 330-1 GMT offers smooth 4Hz operation and good accuracy regulation, on par with modified ETA movements in Tag Heuer Autavias.
**Brand Metric (7.2/10.0)** - Sinn commands respect in the high-premium tool watch arena for engineering prowess, comparable to Christopher Ward or Zodiac.
**Complications Metric (6.8/10.0)** - Date window and 24-hour bezel provide practical utility similar to entry-level GMTs from Longines.
**Rarity Metric (6.5/10.0)** - Moderate exclusivity from steady production aligns with accessible steel sports watches like Oris Divers.
## Total Performance Score (TPS): 4.7
## WM Collector Grade: B+
## Performance Insights: Excels in material durability and dial legibility while offering strong value through innovative features that outperform price-expected norms in a competitive segment.
## TPS Interpretation: Good Value: The watch delivers robust construction and traveler-ready functions well above baseline expectations for its market positioning.
## Watch Data
[Picture URL] - https://www.sinn.de/wp-content/uploads/2023/05/105-UTC-St-SA-105.020.jpg; [backPicture] - https://www.sinn.de/wp-content/uploads/2023/05/105-UTC-St-SA-back.jpg; [lumePicture] - -; [Nickname] - 105 UTC St Sa; [Brand] - Sinn; [Model] - 105 UTC St Sa; [Country] - Germany; [Product Link] - https://www.sinn.de/en/watches/models/105-utc-st-sa/; [reviewLink] - -; [Movement Type] - Automatic; [Movement Name] - Sellita SW 330-1; [# Secondary] - 1; [watchDescription] - Pilot tool watch with UTC 24h bezel, submarine steel case, high water resistance, and advanced Sinn technologies for reliability.; [caseWidth] - 41; [lugToLugLength] - 49; [thickness] - 13.7; [lug] - 22; [waterResist] - 200; [powerReserve] - 42; [beatFrequency] - 28800; [lume] - Super-LumiNova; [jewels] - 25; [caseMaterial] - Submarine steel TEGIMENTed; [watchGlass] - Sapphire anti-reflective both sides; [Bezel] - Bidirectional 24h aluminium captive; [caseback] - Sapphire screw-down; [Crown] - Screwable; [Strap] - Calf leather Louisiana alligator; [Shape] - Round; [Dial] - Black; [Seconds] - yes; [Date] - yes; [Calendar] - no; [Chiming] - no; [Chronograph] - no; [Compass] - no; [dateCompilation] - no; [DigitalDisplay] - no; [Dress] - no; [Field] - no; [GMT] - yes; [Mechanical Alarm] - no; [Moonphase] - no; [Tourbillon] - no; [worldTimer] - no; [powerReserveIndicator] - no; [Diver] - no; [Pilot] - yes; [racing] - no; [Skeleton] - no; [Vintage] - no; [StyleFormal] - no; [StyleCasual] - yes; [StyleSports] - yes; [StyleTravel] - yes; [StyleAdventure] - yes; [StyleCollector] - yes; [StyleTool] - yes; [StyleStatement] - no; [StyleVintage] - no; [StyleSmart] - no; [StyleCustom] - no; [TPS_new] - 4.7; [TPSgrade] - B+; [TPSimpliedPrice] - 1850;
**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**
