Which is cheaper, the Oblvlo RX Day-Date or the Seiko Prospex Sea?

At MSRP the Oblvlo RX Day-Date is the cheaper of the two at $336, against $625 for the Seiko Prospex Sea — a $289 gap before any retailer discounting.

Which is bigger, the Oblvlo RX Day-Date or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 43.8mm versus 40mm for the Oblvlo RX Day-Date — a 3.8mm difference across the dial.

Which has better water resistance, the Oblvlo RX Day-Date or the Seiko Prospex Sea?

The Seiko Prospex Sea is rated to 200m versus 50m for the Oblvlo RX Day-Date.

Which has a longer power reserve, the Oblvlo RX Day-Date or the Seiko Prospex Sea?

The Oblvlo RX Day-Date carries a 42-hour power reserve against 41 hours on the Seiko Prospex Sea.

What movement does the Oblvlo RX Day-Date run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Oblvlo RX Day-Date uses the Miyota 8285 and the Seiko Prospex Sea uses the 4R35.

Side by side

Oblvlo RX Day-DatevsSeiko Prospex Sea

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

Oblvlo RX Day-Date

RX-DD-AD

MSRP $336

Seiko Prospex Sea

srpe37

MSRP $625

At a glance

13 of 29 specs differ

Diameter

RX Day-Date40mm

Prospex Sea43.8mm

Power Reserve

RX Day-Date42h

Prospex Sea41h

Water Resistance

RX Day-Date50m

Prospex Sea200m

MSRP

RX Day-Date$336

Prospex Sea$625

Full specifications

Case

6 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 8285

4R35

Power Reserve

42h

41h

Jewels

Complications

Day, Date

None

Pricing

1 specs

MSRP

$336

$625

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Oblvlo RX Day-DatevsSeiko Prospex Sea

At a glance

Full specifications

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