Side by side

Oak & Oscar The Humboldt GMT SAR EditionvsGrand Seiko SLGB023

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
SLGB023
Grand SeikoSLGB023
MSRP $12,400

At a glance

16 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
SLGB02340.8mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
SLGB02372h
Water Resistance
The Humboldt GMT SAR Edition200m
SLGB023300m
MSRP
The Humboldt GMT SAR Edition$2,950
SLGB023$12,400

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
39.5mm
40.8mm
Thickness
12.5mm
12.9mm
Lug-to-Lug
46.8mm
48.5mm
Lug Width
20mm
21mm
Material
Grade 5 Titanium
Titanium
Water Resistance
200m
300m
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
9RB1
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
72h

Pricing

1 specs
MSRP
$2,950
$12,400

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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 SLGB023

Owners and reviewers widely praise the Grand Seiko SLGB023 for its comfortable 40.8mm titanium case and the smooth winding feel of its Spring Drive 9RB1 movement. The dial's gradient blue "ushio" motif is a highlight, though some reviewers note the bezel's fully lumed scale as a missed opportunity. Enthusiasts are divided on the power reserve indicator's placement and the design of the hour and minute hands. Overall, owners and reviewers rate the Grand Seiko SLGB023 highly for its comfortable titanium case and the refined Spring Drive movement.

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