Side by side

Spinnaker Dumas AutomaticvsSinn U50 SDR with TEGIMENT option

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

What people say

Owners + reviewers, side by side

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

Spinnaker Dumas Automatic

Owners widely praise the Spinnaker Dumas Automatic for its attractive textured blue dial, applied indices, and well-finished case, noting its comfortable wearability due to a short lug-to-lug distance. Some owners flag the use of mineral crystal instead of sapphire and a bracelet with a learning curve and loose keeper. Overall, owners rate the Spinnaker Dumas Automatic highly for its aesthetics and case finishing at its price point.

Sinn U50 SDR with TEGIMENT option

The Sinn U50 SDR with TEGIMENT option is widely praised for its robust submarine steel construction, impressive 50bar water resistance, and excellent anti-reflective coating. Owners and reviewers highlight its toolish, legible dial, satisfyingly tactile bezel, and the outstanding scratch resistance provided by the TEGIMENT hardening. Some owners note the lume is underwhelming, and a few find the clasp aesthetically large and chunky despite its functional diver's extension. Overall, owners and reviewers rate the Sinn U50 SDR with TEGIMENT option highly for its exceptional build quality and scratch resistance at its price point.

At a glance

19 of 29 specs differ
Diameter
Dumas Automatic44mm
U50 SDR with TEGIMENT option41mm
Power Reserve
Dumas Automatic
U50 SDR with TEGIMENT option38h
Water Resistance
Dumas Automatic300m
U50 SDR with TEGIMENT option500m
MSRP
Dumas Automatic$239
U50 SDR with TEGIMENT option$3,326

Full specifications

Case

8 specs
Diameter
44mm
41mm
Thickness
15mm
11.2mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Finish
bead-blasted
Water Resistance
300m
500m
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Underside
Dial Color
Blue
Black
Indices
Lume
None
Luminescent

Movement

5 specs
Caliber
NH35
Sellita SW300-1
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
38h
Jewels
0
25
Complications
None
Date

Pricing

1 specs
MSRP
$239
$3,326
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