Side by side

Astor + Banks Sea Ranger M2vsSpinnaker Dumas GMT

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

Sea Ranger M2
Astor + BanksSea Ranger M2
MSRP $1,149
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

8 of 29 specs differ
Diameter
Sea Ranger M240mm
Dumas GMT44mm
Power Reserve
Sea Ranger M240h
Dumas GMT40h
Water Resistance
Sea Ranger M2300m
Dumas GMT300m
MSRP
Sea Ranger M2$1,149
Dumas GMT$399

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
40mm
44mm
Thickness
12.5mm
15mm
Lug-to-Lug
45.5mm
48mm
Lug Width
20mm
22mm

Crystal & Dial

1 specs
Dial Color
Tobacco
Blue

Movement

1 specs
Caliber
La Joux-Perret G100
Seiko NH34A

Pricing

1 specs
MSRP
$1,149
$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.

Astor + Banks Sea Ranger M2

The Astor + Banks Sea Ranger M2 is widely praised for its balanced design, excellent legibility, and strong GADA (go-anywhere, do-anything) capabilities, featuring 300m water resistance and a scratch-resistant coating. Reviewers note its comfortable 40mm case size and good lume, though one source describes it as good but not great. The movement is a Sellita SW200 adjusted by the brand, with accuracy reported around ±8 seconds per day. The pre-order price is $650, with a standard price of $850. On balance, reviewers find the Astor + Banks Sea Ranger M2 to be a compelling option due to its functional design and robust specifications.

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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