Side by side

Oak & Oscar The Humboldt GMTvsGrand Seiko SLGB023

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

The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175
SLGB023
Grand SeikoSLGB023
MSRP $12,400

At a glance

18 of 29 specs differ
Diameter
The Humboldt GMT39.5mm
SLGB02340.8mm
Power Reserve
The Humboldt GMT56 hoursh
SLGB02372h
Water Resistance
The Humboldt GMT200m
SLGB023300m
MSRP
The Humboldt GMT$2,175
SLGB023$12,400

Full specifications

Case

9 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
316L Stainless Steel
Titanium
Finish
Brushed
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid screw-down
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Yes
Dial Color
White
Black
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
$2,175
$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

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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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