Which is cheaper, the Hamilton American Classic Boulton Mechanical or the Grand Seiko SBGK006?

At MSRP the Hamilton American Classic Boulton Mechanical is the cheaper of the two at $1,075, against $22,200 for the Grand Seiko SBGK006 — a $21,125 gap before any retailer discounting.

Which is bigger, the Hamilton American Classic Boulton Mechanical or the Grand Seiko SBGK006?

The Grand Seiko SBGK006 wears larger at 39mm versus 34mm for the Hamilton American Classic Boulton Mechanical — a 5mm difference across the dial.

Which has better water resistance, the Hamilton American Classic Boulton Mechanical or the Grand Seiko SBGK006?

The Hamilton American Classic Boulton Mechanical is rated to 50m versus 30m for the Grand Seiko SBGK006.

Which has a longer power reserve, the Hamilton American Classic Boulton Mechanical or the Grand Seiko SBGK006?

The Hamilton American Classic Boulton Mechanical carries a 80-hour power reserve against 72 hours on the Grand Seiko SBGK006.

What movement does the Hamilton American Classic Boulton Mechanical run compared to the Grand Seiko SBGK006?

Both watches run manual movements — the Hamilton American Classic Boulton Mechanical uses the H-50 and the Grand Seiko SBGK006 uses the 9S63.

Side by side

Hamilton American Classic Boulton MechanicalvsGrand Seiko SBGK006

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

Hamilton American Classic Boulton Mechanical

h13519711

MSRP $1,075

Grand Seiko SBGK006

sbgk006j

MSRP $22,200

At a glance

11 of 29 specs differ

Diameter

American Classic Boulton Mechanical34mm

SBGK00639mm

Power Reserve

American Classic Boulton Mechanical80h

SBGK00672h

Water Resistance

American Classic Boulton Mechanical50m

SBGK00630m

MSRP

American Classic Boulton Mechanical$1,075

SBGK006$22,200

Full specifications

Case

6 specs

Diameter

34mm

39mm

Thickness

11.2mm

11.6mm

Lug-to-Lug

46mm

44mm

Lug Width

22mm

19mm

Material

Stainless Steel

Gold

Water Resistance

50m

30m

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

White

Black

Movement

2 specs

Caliber

H-50

9S63

Power Reserve

80h

72h

Pricing

1 specs

MSRP

$1,075

$22,200

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