Side by side

Sinn 105 St Sa UTCvsSugess Seestern S434 Pro Diver

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
Seestern S434 Pro Diver
SugessSeestern S434 Pro Diver
MSRP $249

At a glance

17 of 29 specs differ
Diameter
105 St Sa UTC41mm
Seestern S434 Pro Diver40mm
Power Reserve
105 St Sa UTC38h
Seestern S434 Pro Diver40h
Water Resistance
105 St Sa UTC200m
Seestern S434 Pro Diver200m
MSRP
105 St Sa UTC$1,998
Seestern S434 Pro Diver$249

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
41mm
40mm
Thickness
11.9mm
12mm
Lug-to-Lug
46mm
Material
Stainless Steel
Stainless Steel/Rose Gold
Finish
bead-blasted
Brushed and polished
Caseback
Engraved

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
2 Salmon
Indices
Applied
Lume
Luminescent
Super-LumiNova BGW9

Movement

4 specs
Caliber
SW 330-2
NH35
Beat Rate
28,800 vph
3 vph
Power Reserve
38h
40h
Complications
Date, GMT
GMT, Chronograph, Moonphase, Date

Pricing

1 specs
MSRP
$1,998
$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.

Sugess Seestern S434 Pro Diver

Owners widely praise the Sugess Seestern S434 Pro Diver for its impressive finishing and craftsmanship at its price point, highlighting the applied indices that play with light, excellent BGW9 lume, and attractive color options. Specific positive notes include the domed sapphire crystal, short lug-to-lug, and on-the-fly clasp adjustment. However, some owners report quality control issues such as misaligned bezels or indices, while others with V2 models experience no such problems. Caveats include slight bezel back play, light AR coating on the crystal, and a clasp that could be smoother, with one owner desiring a color-matched date wheel. On balance, owners rate the Sugess Seestern S434 Pro Diver highly for its exceptional value and build quality, particularly the dial finishing and lume.

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