Which is cheaper, the Glycine Airman No. 1 GMT or the Helgray Poseidon Diver (Automatic)?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $2,800 for the Glycine Airman No. 1 GMT — a $2,551 gap before any retailer discounting.

Which is bigger, the Glycine Airman No. 1 GMT or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 36mm for the Glycine Airman No. 1 GMT — a 4mm difference across the dial.

Which has better water resistance, the Glycine Airman No. 1 GMT or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 30m for the Glycine Airman No. 1 GMT.

Which has a longer power reserve, the Glycine Airman No. 1 GMT or the Helgray Poseidon Diver (Automatic)?

The Glycine Airman No. 1 GMT carries a 48-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Glycine Airman No. 1 GMT run compared to the Helgray Poseidon Diver (Automatic)?

Both watches run automatic movements — the Glycine Airman No. 1 GMT uses the SW330-2 and the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty.

Side by side

Glycine Airman No. 1 GMTvsHelgray Poseidon Diver (Automatic)

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

Glycine Airman No. 1 GMT

GL0372

MSRP $2,800

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

At a glance

16 of 29 specs differ

Diameter

Airman No. 1 GMT36mm

Poseidon Diver (Automatic)40mm

Power Reserve

Airman No. 1 GMT48h

Poseidon Diver (Automatic)40h

Water Resistance

Airman No. 1 GMT30m

Poseidon Diver (Automatic)300m

MSRP

Airman No. 1 GMT$2,800

Poseidon Diver (Automatic)$249

Full specifications

Case

7 specs

Crystal & Dial

5 specs

Crystal Shape

—

Flat

AR Coating

—

Inner

Dial Color

Silver

Black

Indices

—

Applied

Lume

Luminous

None

Movement

3 specs

Caliber

SW330-2

NH35 Warranty

Power Reserve

48h

40h

Complications

GMT, Date

None

Pricing

1 specs

MSRP

$2,800

$249

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