Side by side

Sinn EZM 13.1vsSpinnaker Dumas Automatic

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

EZM 13.1
SinnEZM 13.1
MSRP $3,780
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239
What people say

Owners + reviewers, side by side

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

Sinn EZM 13.1

Owners widely praise the Sinn EZM 13.1 for its robust, tank-like build and purpose-built, rugged design with unique technological features. Some owners note accuracy averaging +6 to +8 seconds per day. One owner reported a misaligned hour hand, a stuttering chrono register in extreme cold, and discovered its case was not made by SUG. Owners are split on the watch's chunky nature and bracelet, with some finding it unsuitable. Overall, owners rate the Sinn EZM 13.1 highly for its unique, rugged design and robust build.

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.

At a glance

17 of 29 specs differ
Diameter
EZM 13.141mm
Dumas Automatic44mm
Power Reserve
EZM 13.138h
Dumas Automatic40h
Water Resistance
EZM 13.1500m
Dumas Automatic300m
MSRP
EZM 13.1$3,780
Dumas Automatic$239

Full specifications

Case

7 specs
Diameter
41mm
44mm
Lug-to-Lug
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Finish
bead-blasted
Brushed and polished
Water Resistance
500m
300m
Caseback
Solid

Crystal & Dial

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

Movement

4 specs
Caliber
SINN Movement SZ02
Seiko NH35
Power Reserve
38h
40h
Jewels
26
25
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$3,780
$239
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Sinn EZM 13.1 vs Spinnaker Dumas Automatic gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.