Side by side

Sinn 105 St Sa UTCvsOrient Kamasu

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
Kamasu
OrientKamasu
MSRP $375

At a glance

17 of 29 specs differ
Diameter
105 St Sa UTC41mm
Kamasu41.8mm
Power Reserve
105 St Sa UTC38h
Kamasu40h
Water Resistance
105 St Sa UTC200m
Kamasu200m
MSRP
105 St Sa UTC$1,998
Kamasu$375

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
41mm
41.8mm
Thickness
11.9mm
12.8mm
Lug-to-Lug
47mm
Lug Width
20mm
22mm
Finish
bead-blasted
Brushed and polished
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
AR Coating
Underside
Indices
Lume
Luminescent
None

Movement

5 specs
Caliber
SW 330-2
F6922
Beat Rate
28,800 vph
21,600 vph
Power Reserve
38h
40h
Jewels
25
22
Complications
Date, GMT
Day-date

Pricing

1 specs
MSRP
$1,998
$375

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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.

Orient Kamasu

Owners widely praise the Orient Kamasu for its excellent value, robust build quality suitable for daily wear, and attractive design featuring applied indices and a sunburst dial. Reviewers and owners consistently highlight its strong lume, hacking and hand-winding movement, sapphire crystal, and sub-42mm dimensions. Some owners note a rattle, a crown that can be hard to grip, and a bezel with noticeable play or a tendency to become sticky. The bracelet is frequently criticized for its hollow end links and pressed clasp, though opinions on its taper vary. Accuracy figures reported by owners range from approximately +15 seconds per day to more precise timekeeping. Overall, owners rate the Orient Kamasu highly for its impressive finishing and features at its price point.

From video reviewers

The Orient Kamasu's compact package makes it suitable for smaller wrists without compromising wrist presence. A notable weakness is that the bracelet is decent but may have some issues, although the reviewer does not elaborate. Reviewers disagree on the value for money, with one highlighting the affordable price and in-house movement, while the other implies a trade-off in value.

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