Which is cheaper, the Bremont Altitude Perpetual Calendar GMT or the Grand Seiko SBGK006?

At MSRP the Grand Seiko SBGK006 is the cheaper of the two at $22,200, against $38,450 for the Bremont Altitude Perpetual Calendar GMT — a $16,250 gap before any retailer discounting.

Which is bigger, the Bremont Altitude Perpetual Calendar GMT or the Grand Seiko SBGK006?

The Bremont Altitude Perpetual Calendar GMT wears larger at 42mm versus 39mm for the Grand Seiko SBGK006 — a 3mm difference across the dial.

Which has a longer power reserve, the Bremont Altitude Perpetual Calendar GMT or the Grand Seiko SBGK006?

The Grand Seiko SBGK006 carries a 72-hour power reserve against 40 hours on the Bremont Altitude Perpetual Calendar GMT.

What movement does the Bremont Altitude Perpetual Calendar GMT run compared to the Grand Seiko SBGK006?

The Bremont Altitude Perpetual Calendar GMT runs a automatic caliber, while the Grand Seiko SBGK006 runs a manual (9S63).

Side by side

Bremont Altitude Perpetual Calendar GMTvsGrand Seiko SBGK006

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

Bremont Altitude Perpetual Calendar GMT

alt42-per-ti-bl-b

MSRP $38,450

Grand Seiko SBGK006

sbgk006j

MSRP $22,200

At a glance

13 of 29 specs differ

Diameter

Altitude Perpetual Calendar GMT42mm

SBGK00639mm

Power Reserve

Altitude Perpetual Calendar GMT40h

SBGK00672h

Water Resistance

Altitude Perpetual Calendar GMT—

SBGK00630m

MSRP

Altitude Perpetual Calendar GMT$38,450

SBGK006$22,200

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

Blue

Black

Movement

3 specs

Caliber

—

9S63

Type

Automatic

Manual

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$38,450

$22,200

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