Which is cheaper, the Seestern Sub 300 V4 or the Helgray Poseidon Diver (Automatic)?

At MSRP the Seestern Sub 300 V4 is the cheaper of the two at $10, against $249 for the Helgray Poseidon Diver (Automatic) — a $239 gap before any retailer discounting.

Which is bigger, the Seestern Sub 300 V4 or the Helgray Poseidon Diver (Automatic)?

The Seestern Sub 300 V4 wears larger at 42mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 2mm difference across the dial.

Which has better water resistance, the Seestern Sub 300 V4 or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 200m for the Seestern Sub 300 V4.

Which has a longer power reserve, the Seestern Sub 300 V4 or the Helgray Poseidon Diver (Automatic)?

The Seestern Sub 300 V4 carries a 41-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Seestern Sub 300 V4 run compared to the Helgray Poseidon Diver (Automatic)?

Both watches run automatic movements — the Seestern Sub 300 V4 uses the Seiko NH35A and the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty.

Side by side

Seestern Sub 300 V4vsHelgray Poseidon Diver (Automatic)

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

Seestern Sub 300 V4

Sub 300 V4

MSRP $10

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

At a glance

15 of 29 specs differ

Diameter

Sub 300 V442mm

Poseidon Diver (Automatic)40mm

Power Reserve

Sub 300 V441h

Poseidon Diver (Automatic)40h

Water Resistance

Sub 300 V4200m

Poseidon Diver (Automatic)300m

MSRP

Sub 300 V4$10

Poseidon Diver (Automatic)$249

Full specifications

Case

6 specs

Diameter

42mm

40mm

Thickness

13mm

12mm

Material

316L Stainless Steel

Stainless Steel

Finish

Brushed + Sandblasted

Brushed and polished

Water Resistance

200m

300m

Caseback

Solid screw-down

Solid

Crystal & Dial

3 specs

AR Coating

Underside

Inner

Dial Color

Orange

Black

Lume

Japan Lume (blue glow)

None

Movement

5 specs

Caliber

Seiko NH35A

NH35 Warranty

Beat Rate

21,600 vph

28,800 vph

Power Reserve

41h

40h

Jewels

Complications

GMT, Date

None

Pricing

1 specs

MSRP

$10

$249

Follow this matchup

Get a note when Seestern Sub 300 V4 vs Helgray Poseidon Diver (Automatic) gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring