Which is cheaper, the Maystone Watch Co Prosperity GMT or the Grand Seiko SBGH289?

At MSRP the Maystone Watch Co Prosperity GMT is the cheaper of the two at $443, against $7,700 for the Grand Seiko SBGH289 — a $7,257 gap before any retailer discounting.

Which is bigger, the Maystone Watch Co Prosperity GMT or the Grand Seiko SBGH289?

The Grand Seiko SBGH289 wears larger at 43.8mm versus 38mm for the Maystone Watch Co Prosperity GMT — a 5.8mm difference across the dial.

Which has better water resistance, the Maystone Watch Co Prosperity GMT or the Grand Seiko SBGH289?

The Grand Seiko SBGH289 is rated to 200m versus 100m for the Maystone Watch Co Prosperity GMT.

Which has a longer power reserve, the Maystone Watch Co Prosperity GMT or the Grand Seiko SBGH289?

The Grand Seiko SBGH289 carries a 55-hour power reserve against 41 hours on the Maystone Watch Co Prosperity GMT.

What movement does the Maystone Watch Co Prosperity GMT run compared to the Grand Seiko SBGH289?

Both watches run automatic movements — the Maystone Watch Co Prosperity GMT uses the Seiko NH34 and the Grand Seiko SBGH289 uses the 9S85.

Side by side

Maystone Watch Co Prosperity GMTvsGrand Seiko SBGH289

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

Add a watch

Maystone Watch Co Prosperity GMT

prosperity-gmt-red-kite

MSRP $443

Grand Seiko SBGH289

sbgh289g

MSRP $7,700

Buy from Maystone Watch Co ↗

Buy used on eBay ↗

Buy from Grand Seiko ↗

Buy used on eBay ↗

At a glance

12 of 29 specs differ

Diameter

Prosperity GMT38mm

SBGH28943.8mm

Power Reserve

Prosperity GMT41h

SBGH28955h

Water Resistance

Prosperity GMT100m

SBGH289200m

MSRP

Prosperity GMT$443

SBGH289$7,700

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Yes

Dial Color

Red

Black

Lume

string

None

Movement

2 specs

Caliber

Seiko NH34

9S85

Power Reserve

41h

55h

Pricing

1 specs

MSRP

—

$7,700

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—Used

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Maystone Watch Co Prosperity GMTvsGrand Seiko SBGH289

At a glance

Full specifications

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