Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Tudor Black Bay One 31 S&G?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $6,850 for the Tudor Black Bay One 31 S&G — a $6,601 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Tudor Black Bay One 31 S&G?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 31mm for the Tudor Black Bay One 31 S&G — a 9mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Tudor Black Bay One 31 S&G?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 100m for the Tudor Black Bay One 31 S&G.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Tudor Black Bay One 31 S&G?

The Tudor Black Bay One 31 S&G carries a 50-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Helgray Poseidon Diver (Automatic) run compared to the Tudor Black Bay One 31 S&G?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Tudor Black Bay One 31 S&G uses the MT5201.

Side by side

Helgray Poseidon Diver (Automatic)vsTudor Black Bay One 31 S&G

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

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

Tudor Black Bay One 31 S&G

m79603-0001

MSRP $6,850

At a glance

10 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

Black Bay One 31 S&G31mm

Power Reserve

Poseidon Diver (Automatic)40h

Black Bay One 31 S&G50h

Water Resistance

Poseidon Diver (Automatic)300m

Black Bay One 31 S&G100m

MSRP

Poseidon Diver (Automatic)$249

Black Bay One 31 S&G$6,850

Full specifications

Case

7 specs

Movement

2 specs

Caliber

NH35 Warranty

MT5201

Power Reserve

40h

50h

Pricing

1 specs

MSRP

$249

$6,850

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