Side by side

Spinnaker Dumas GMTvsLongines FLAGSHIP HERITAGE MOONPHASE

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399
FLAGSHIP HERITAGE MOONPHASE
LonginesFLAGSHIP HERITAGE MOONPHASE
MSRP $3,450

At a glance

22 of 29 specs differ
Diameter
Dumas GMT44mm
FLAGSHIP HERITAGE MOONPHASE38.5mm
Power Reserve
Dumas GMT40h
FLAGSHIP HERITAGE MOONPHASE72h
Water Resistance
Dumas GMT300m
FLAGSHIP HERITAGE MOONPHASE30m
MSRP
Dumas GMT$399
FLAGSHIP HERITAGE MOONPHASE$3,450

Full specifications

Case

9 specs
Category
GMT
Moonphase
Diameter
44mm
38.5mm
Thickness
15mm
12.4mm
Lug-to-Lug
48mm
46.3mm
Lug Width
22mm
19mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Water Resistance
300m
30m
Caseback
Solid
Screw-down case back

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Blue
Ivory
Indices
Applied
Applied indexes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Seiko NH34A
L899.5
Beat Rate
28,800 vph
25,200 vph
Power Reserve
40h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds, moon phase display and date indicated by small hand at

Pricing

1 specs
MSRP
$399
$3,450

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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.

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.

Longines FLAGSHIP HERITAGE MOONPHASE

The Longines Flagship Heritage Moonphase is widely praised for its elegant aesthetic, balanced midnight blue dial with dauphine hands and wedge indices, and the L899.5 movement's 72-hour power reserve. Owners appreciate its value, classy integrated moonphase complication with a night blue background and shiny silver stars, and comfortable 38.5mm case size with good finishing, fitting well on smaller wrists. However, reviewers and owners note its minimal 30-meter water resistance, a 3 o'clock crown that appears undersized, and a thickness of 12.4mm, which some find hinders its dress watch suitability and ability to slip under a cuff, though others find it wearable. Some also consider the design overly traditional and the rehaut depth excessive. On balance, owners and reviewers rate the Longines Flagship Heritage Moonphase highly for its elegant design and value proposition at its price point.

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