Side by side

Sinn 105 St Sa UTCvsSpinnaker Croft 42 Skeleton

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
Croft 42 Skeleton
SpinnakerCroft 42 Skeleton
MSRP $435

At a glance

18 of 29 specs differ
Diameter
105 St Sa UTC41mm
Croft 42 Skeleton42mm
Power Reserve
105 St Sa UTC38h
Croft 42 Skeleton40h
Water Resistance
105 St Sa UTC200m
Croft 42 Skeleton100m
MSRP
105 St Sa UTC$1,998
Croft 42 Skeleton$435

Full specifications

Case

9 specs
Category
Tool
Sport
Diameter
41mm
42mm
Thickness
11.9mm
14mm
Lug-to-Lug
49mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Finish
bead-blasted
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
Steel
Indices
Applied
Lume
Luminescent
None

Movement

3 specs
Caliber
SW 330-2
SII NH38A
Power Reserve
38h
40h
Complications
Date, GMT
None

Pricing

1 specs
MSRP
$1,998
$435

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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.

Spinnaker Croft 42 Skeleton

Owners widely report the Spinnaker Croft 42 Skeleton offers good build quality for its price, with some finding it a decent buy on sale. Reviewers note the 42mm case provides significant wrist presence. However, opinions are split on legibility and aesthetics, with some finding it poorly executed and uninteresting while others consider it one of the more legible skeleton watches. The watch is powered by a Seiko NH70 automatic movement with a 41-hour power reserve, though one reviewer considered the movement uninteresting. The bracelet and clasp are considered mediocre for the price point. Overall, owners and reviewers find the Spinnaker Croft 42 Skeleton to be a polarizing but potentially good value skeletonized dive watch when purchased on sale, with its build quality being a key positive for many.

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