Which is cheaper, the Oblvlo BLM ZB or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Oblvlo BLM ZB is the cheaper of the two at $315, against $625 for the Seiko Prospex Sea Save the Ocean Special Edition — a $310 gap before any retailer discounting.

Which is bigger, the Oblvlo BLM ZB or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 45mm versus 41mm for the Oblvlo BLM ZB — a 4mm difference across the dial.

Which has better water resistance, the Oblvlo BLM ZB 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 BLM ZB.

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

The Seiko Prospex Sea Save the Ocean Special Edition carries a 41-hour power reserve against 40 hours on the Oblvlo BLM ZB.

Side by side

Oblvlo BLM ZBvsSeiko Prospex Sea Save the Ocean Special Edition

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

Oblvlo BLM ZB

BLM-ZB

MSRP $315

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

At a glance

12 of 29 specs differ

Diameter

BLM ZB41mm

Prospex Sea Save the Ocean Special Edition45mm

Power Reserve

BLM ZB40h

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

BLM ZB50m

Prospex Sea Save the Ocean Special Edition200m

MSRP

BLM ZB$315

Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

—

4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$315

$625

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