Side by side

Oak & Oscar The Humboldt GMT SAR EditionvsGrand Seiko SLGA015

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

The Humboldt GMT SAR Edition
Oak & OscarThe Humboldt GMT SAR Edition
MSRP $2,950
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

15 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
SLGA01543.8mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
SLGA015120h
Water Resistance
The Humboldt GMT SAR Edition200m
SLGA015200m
MSRP
The Humboldt GMT SAR Edition$2,950
SLGA015$12,600

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
39.5mm
43.8mm
Thickness
12.5mm
13.8mm
Lug-to-Lug
46.8mm
51.5mm
Lug Width
20mm
23mm
Material
Grade 5 Titanium
Titanium
Caseback
Solid screw-down
Solid

Crystal & Dial

3 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Yes
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
Sellita SW330
9RA5
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
120h

Pricing

1 specs
MSRP
$2,950
$12,600

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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.

Oak & Oscar The Humboldt GMT SAR Edition

Oak & Oscar The Humboldt GMT SAR Edition is praised for its anti-magnetic properties, sandwich lume dial, and overall construction quality for its price point. It features a brushed Grade 5 titanium case, a navy blue sandwich dial with an orange minute track and seconds hand, and a Sellita SW330 movement with a 56-hour power reserve. Minor drawbacks noted include bracelet sizing adjustment and lume brightness. On balance, owners and reviewers rate Oak & Oscar The Humboldt GMT SAR Edition highly for its robust construction and unique dial design at its price point.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

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