Side by side

Seiko Prospex LX linevsSpinnaker Dumas Automatic

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

Prospex LX line
SeikoProspex LX line
MSRP $5,500
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239

At a glance

14 of 29 specs differ
Diameter
Prospex LX line44.8mm
Dumas Automatic44mm
Power Reserve
Prospex LX line72h
Dumas Automatic40h
Water Resistance
Prospex LX line200m
Dumas Automatic300m
MSRP
Prospex LX line$5,500
Dumas Automatic$239

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
44.8mm
44mm
Thickness
14.7mm
15mm
Lug-to-Lug
50.9mm
48mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Super-clear coating
Inner
Dial Color
Black
Blue
Lume
LumiBrite on hands and index(es)
None

Movement

4 specs
Caliber
5R66
SII NH35A
Type
Spring Drive
Automatic
Power Reserve
72h
40h
Jewels
30
25

Pricing

1 specs
MSRP
$5,500
$239

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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.

Seiko Prospex LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

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.

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