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Sinn 105 St Sa UTC
Ref. 105 St Sa UTC · Tool
$1,998Stock unknown
Case
- Diameter
- 41mm
- Thickness
- 11.9mm
- Lug width
- 20mm
- Material
- Stainless Steel
- Finish
- bead-blasted
- Water resistance
- 200m
Crystal & dial
- Crystal
- Sapphire
- AR coating
- Underside
- Dial colour
- Black
- Lume
- Luminescent
Movement
- Caliber
- Sellita SW330-2
- Type
- Automatic
- Beat rate
- 28,800 vph
- Power reserve
- 38h
- Jewels
- 25
- Complications
- Date, GMT
Sellita
Sellita's GMT caliber featuring an independently adjustable 24-hour hand for dual timezone tracking. Based on the SW200 architecture with an additional GMT module, it offers a 56-hour power reserve that exceeds the base SW200's 38 hours. The true GMT function with jumping local hour allows quick timezone changes, making it a practical choice for brands building travel watches at accessible price points.
Design language
- Case shape
- round
- Dial style
- standard
- Bezel
- rotating_bidirectional
- Bracelet
- leather_strap
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4 colorways
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Retail$1,998
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Owners and reviewers widely praise the Sinn 105 St Sa UTC for its legible dial, precise bi-directional bezel action, and the technical, toolish aesthetic of its bead-blasted, TEGIMENT-hardened steel case. The watch is noted for its smooth sweep and snappy date change, with accuracy often within COSC standards, and its vertical day/date display with a German day wheel is a distinctive feature. Some owners find the lug-to-lug distance large for smaller wrists, and the bracelet clasp is considered a weakness by one source, while the non-lumed UTC hand is a deliberate design choice. The Sinn 105 St Sa UTC utilizes a Sellita SW330-1 automatic movement with a 42-hour power reserve and offers 200 meters of water resistance. Overall, the consensus is that owners and reviewers rate the Sinn 105 St Sa UTC highly for its robust build quality and functional tool watch design at its price point.
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