Side by side

Spinnaker Dumas AutomaticvsTedoro Harmony 36mm Stainless Steel Seiko NH35A

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.

Tedoro Harmony 36mm Stainless Steel Seiko NH35A

The Tedoro Harmony 36mm Stainless Steel Seiko NH35A is built around the reliable Seiko NH35A automatic movement, with owners reporting accuracy around +/- 5 seconds per day. The 36mm case size is noted as being a custom build, incorporating parts from AliExpress and an Invicta Pro Diver, with specific mention of gold hour and minute hands. On balance, owners find the Tedoro Harmony 36mm Stainless Steel Seiko NH35A to be a satisfactory custom build, appreciating the reliability of the NH35A movement and the familiar styling.

At a glance

11 of 29 specs differ
Diameter
Dumas Automatic44mm
Harmony 36mm Stainless Steel Seiko NH35A36mm
Power Reserve
Dumas Automatic40h
Harmony 36mm Stainless Steel Seiko NH35A41h
Water Resistance
Dumas Automatic300m
Harmony 36mm Stainless Steel Seiko NH35A100m
MSRP
Dumas Automatic$239
Harmony 36mm Stainless Steel Seiko NH35A$495

Full specifications

Case

7 specs
Category
Diver
Diameter
44mm
36mm
Thickness
15mm
Lug-to-Lug
48mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Blue
Burgundy

Movement

2 specs
Caliber
NH35
Seiko NH35
Power Reserve
40h
41h

Pricing

1 specs
MSRP
$239
$495
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