Which is cheaper, the Oblvlo HM GT or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Oblvlo HM GT is the cheaper of the two at $209, against $625 for the Seiko Prospex Sea Save the Ocean Special Edition — a $416 gap before any retailer discounting.

Which is bigger, the Oblvlo HM GT or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 45mm versus 44mm for the Oblvlo HM GT — a 1mm difference across the dial.

Which has better water resistance, the Oblvlo HM GT or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition is rated to 200m versus 50m for the Oblvlo HM GT.

Which has a longer power reserve, the Oblvlo HM GT or the Seiko Prospex Sea Save the Ocean Special Edition?

The Oblvlo HM GT carries a 42-hour power reserve against 41 hours on the Seiko Prospex Sea Save the Ocean Special Edition.

What movement does the Oblvlo HM GT run compared to the Seiko Prospex Sea Save the Ocean Special Edition?

Both watches run automatic movements — the Oblvlo HM GT uses the Miyota 8217 and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R36.

Side by side

Oblvlo HM GTvsSeiko Prospex Sea Save the Ocean Special Edition

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

Oblvlo HM GT

HM-GT

MSRP $209

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

At a glance

12 of 29 specs differ

Diameter

HM GT44mm

Prospex Sea Save the Ocean Special Edition45mm

Power Reserve

HM GT42h

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

HM GT50m

Prospex Sea Save the Ocean Special Edition200m

MSRP

HM GT$209

Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

5 specs

Crystal & Dial

2 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

4 specs

Caliber

Miyota 8217

4R36

Power Reserve

42h

41h

Jewels

Complications

Day, Date

None

Pricing

1 specs

MSRP

$209

$625

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