Side by side

Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited EditionvsSpinnaker Dumas GMT

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

14 of 29 specs differ
Diameter
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition45.4mm
Dumas GMT44mm
Power Reserve
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition72h
Dumas GMT40h
Water Resistance
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition600m
Dumas GMT300m
MSRP
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition$4,600
Dumas GMT$399

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
45.4mm
44mm
Thickness
16mm
15mm
Lug-to-Lug
50.4mm
48mm
Material
Titanium
316L Stainless Steel
Water Resistance
600m
300m

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Blue
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
8L45
Seiko NH34A
Power Reserve
72h
40h
Jewels
35
25

Pricing

1 specs
MSRP
$4,600
$399

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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 Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition

Owners widely praise the Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition's titanium monobloc case construction and the dial's blue gradient finish. Some owners find the 45.4mm diameter and 16mm thickness too large, noting a poor dial-to-bezel ratio and excessive text on the dial. The 8L45 movement offers a 72-hour power reserve, with reported accuracy ranging from +10/-5 seconds per day to +25/-15 seconds per day. On balance, owners appreciate the watch's tool watch vibe and unique dial construction, despite some reservations about its size and price.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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