Which is cheaper, the Citizen Promaster Professional Diver or the Vaer D4 Outerknown Solar Diver?

At MSRP the Citizen Promaster Professional Diver is the cheaper of the two at $356, against $549 for the Vaer D4 Outerknown Solar Diver — a $193 gap before any retailer discounting.

Which is bigger, the Citizen Promaster Professional Diver or the Vaer D4 Outerknown Solar Diver?

The Citizen Promaster Professional Diver wears larger at 45mm versus 39mm for the Vaer D4 Outerknown Solar Diver — a 6mm difference across the dial.

What movement does the Citizen Promaster Professional Diver run compared to the Vaer D4 Outerknown Solar Diver?

The Citizen Promaster Professional Diver runs a solar caliber (E168), while the Vaer D4 Outerknown Solar Diver runs a quartz.

Side by side

Citizen Promaster Professional DivervsVaer D4 Outerknown Solar Diver

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

Citizen Promaster Professional Diver

BN0191

MSRP $356

Vaer D4 Outerknown Solar Diver

d4-outerknown-usa-solar-diver-marine

MSRP $549

At a glance

8 of 29 specs differ

Diameter

Promaster Professional Diver45mm

D4 Outerknown Solar Diver39mm

Power Reserve

Promaster Professional Diver40h

D4 Outerknown Solar Diver40h

Water Resistance

Promaster Professional Diver200m

D4 Outerknown Solar Diver200m

MSRP

Promaster Professional Diver$356

D4 Outerknown Solar Diver$549

Full specifications

Case

4 specs

Diameter

45mm

39mm

Thickness

12mm

13.18mm

Lug Width

22mm

20mm

Material

Stainless Steel

316L Stainless Steel

Crystal & Dial

1 specs

Crystal

Mineral

Domed Sapphire

Movement

2 specs

Caliber

E168

—

Type

Solar

Quartz

Pricing

1 specs

MSRP

$356

$549

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