Which is cheaper, the Nivada Grenchen Autochron or the Helgray Poseidon Diver (Automatic)?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $2,495 for the Nivada Grenchen Autochron — a $2,246 gap before any retailer discounting.

Which is bigger, the Nivada Grenchen Autochron or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 38mm for the Nivada Grenchen Autochron — a 2mm difference across the dial.

Which has better water resistance, the Nivada Grenchen Autochron or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 200m for the Nivada Grenchen Autochron.

Which has a longer power reserve, the Nivada Grenchen Autochron or the Helgray Poseidon Diver (Automatic)?

The Nivada Grenchen Autochron carries a 42-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Nivada Grenchen Autochron run compared to the Helgray Poseidon Diver (Automatic)?

Both watches run automatic movements — the Nivada Grenchen Autochron uses the ETA Valjoux 7750 and the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty.

Side by side

Nivada Grenchen AutochronvsHelgray Poseidon Diver (Automatic)

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

Nivada Grenchen Autochron

Autochron

MSRP $2,495

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

At a glance

13 of 29 specs differ

Diameter

Autochron38mm

Poseidon Diver (Automatic)40mm

Power Reserve

Autochron42h

Poseidon Diver (Automatic)40h

Water Resistance

Autochron200m

Poseidon Diver (Automatic)300m

MSRP

Autochron$2,495

Poseidon Diver (Automatic)$249

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Dial Color

Matt Blue Small texture +Super White Lum thick Printed 7506C Super Lum. Dots +White thick Printed logo

Black

Indices

Baton

Applied

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

ETA Valjoux 7750

NH35 Warranty

Beat Rate

28 vph

28,800 vph

Power Reserve

42h

40h

Pricing

1 specs

MSRP

$2,495

$249

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