Side by side

Sinn 105 St Sa UTCvsCWC Automatic Divers Watch Mk.2 Black

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

105 St Sa UTC
Sinn105 St Sa UTC
MSRP $1,998
Automatic Divers Watch Mk.2 Black
CWCAutomatic Divers Watch Mk.2 Black
MSRP $1,249

At a glance

15 of 29 specs differ
Diameter
105 St Sa UTC41mm
Automatic Divers Watch Mk.2 Black41mm
Power Reserve
105 St Sa UTC38h
Automatic Divers Watch Mk.2 Black40h
Water Resistance
105 St Sa UTC200m
Automatic Divers Watch Mk.2 Black300m
MSRP
105 St Sa UTC$1,998
Automatic Divers Watch Mk.2 Black$1,249

Full specifications

Case

6 specs
Category
Tool
Diver
Thickness
11.9mm
12mm
Lug-to-Lug
47mm
Finish
bead-blasted
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
CWC Automatic Divers Watch Mk.2 Black (SF300 AS120)
Indices
Applied
Lume
Luminescent
Super-LumiNova

Movement

3 specs
Caliber
SW 330-2
Sellita SW200-1
Power Reserve
38h
40h
Complications
Date, GMT
None

Pricing

1 specs
MSRP
$1,998
$1,249

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sinn 105 St Sa UTC

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.

CWC Automatic Divers Watch Mk.2 Black

Owners widely praise the CWC Automatic Divers Watch Mk.2 Black for its brushed chapter ring, precise 120-click bezel, clear sapphire crystal, excellent case finishing, and significantly improved lume. The watch is considered a terrific value with solid construction. Some owners express a preference for a matte finish for a more tool-like appearance, though polished versions offer a dressier look and easier scratch removal. On balance, owners rate the CWC Automatic Divers Watch Mk.2 Black highly for its tool-like features and excellent value.

From video reviewers

The bezel action is smooth. The price has increased due to popularity.

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