Which is cheaper, the Oak & Oscar The Humboldt GMT USSS Edition or the Grand Seiko SLGB005?

At MSRP the Oak & Oscar The Humboldt GMT USSS Edition is the cheaper of the two at $2,200, against $11,100 for the Grand Seiko SLGB005 — a $8,900 gap before any retailer discounting.

Which is bigger, the Oak & Oscar The Humboldt GMT USSS Edition or the Grand Seiko SLGB005?

The Oak & Oscar The Humboldt GMT USSS Edition wears larger at 39.5mm versus 37mm for the Grand Seiko SLGB005 — a 2.5mm difference across the dial.

Which has better water resistance, the Oak & Oscar The Humboldt GMT USSS Edition or the Grand Seiko SLGB005?

The Oak & Oscar The Humboldt GMT USSS Edition is rated to 200m versus 100m for the Grand Seiko SLGB005.

Which has a longer power reserve, the Oak & Oscar The Humboldt GMT USSS Edition or the Grand Seiko SLGB005?

The Grand Seiko SLGB005 carries a 72-hour power reserve against 56 hours hours on the Oak & Oscar The Humboldt GMT USSS Edition.

What movement does the Oak & Oscar The Humboldt GMT USSS Edition run compared to the Grand Seiko SLGB005?

The Oak & Oscar The Humboldt GMT USSS Edition runs a automatic caliber (Sellita SW330), while the Grand Seiko SLGB005 runs a spring drive (9RB2).

Side by side

Oak & Oscar The Humboldt GMT USSS EditionvsGrand Seiko SLGB005

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

Oak & Oscar The Humboldt GMT USSS Edition

HMBDLTGMTUSSS

MSRP $2,200

Grand Seiko SLGB005

slgb005g

MSRP $11,100

At a glance

14 of 29 specs differ

Diameter

The Humboldt GMT USSS Edition39.5mm

SLGB00537mm

Power Reserve

The Humboldt GMT USSS Edition56 hoursh

SLGB00572h

Water Resistance

The Humboldt GMT USSS Edition200m

SLGB005100m

MSRP

The Humboldt GMT USSS Edition$2,200

SLGB005$11,100

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal Shape

Double-domed

Flat

AR Coating

Inner

Yes

Lume

Super-LumiNova BGW9

None

Movement

3 specs

Caliber

Sellita SW330

9RB2

Type

Automatic

Spring Drive

Power Reserve

56 hoursh

72h

Pricing

1 specs

MSRP

$2,200

$11,100

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