Which is cheaper, the Hemel Sky Racer Mechanical or the Seiko Diamond Collection?

At MSRP the Seiko Diamond Collection is the cheaper of the two at $475, against $550 for the Hemel Sky Racer Mechanical — a $75 gap before any retailer discounting.

Which is bigger, the Hemel Sky Racer Mechanical or the Seiko Diamond Collection?

The Hemel Sky Racer Mechanical wears larger at 43mm versus 27mm for the Seiko Diamond Collection — a 16mm difference across the dial.

Which has better water resistance, the Hemel Sky Racer Mechanical or the Seiko Diamond Collection?

The Hemel Sky Racer Mechanical is rated to 50m versus 5m for the Seiko Diamond Collection.

What movement does the Hemel Sky Racer Mechanical run compared to the Seiko Diamond Collection?

The Hemel Sky Racer Mechanical runs a manual caliber (Seagull ST19), while the Seiko Diamond Collection runs a quartz (V137).

Side by side

Hemel Sky Racer MechanicalvsSeiko Diamond Collection

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

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

Seiko Diamond Collection

sut068p9

MSRP $475

At a glance

11 of 29 specs differ

Diameter

Sky Racer Mechanical43mm

Diamond Collection27mm

Power Reserve

Sky Racer Mechanical40h

Diamond Collection40h

Water Resistance

Sky Racer Mechanical50m

Diamond Collection50m

MSRP

Sky Racer Mechanical$550

Diamond Collection$475

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Crystal

Domed Sapphire

Hardlex

Lume

None

LumiBrite on hands and index(es)

Movement

2 specs

Caliber

Seagull ST19

V137

Type

Manual

Quartz

Pricing

1 specs

MSRP

$550

$475

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Hemel Sky Racer MechanicalvsSeiko Diamond Collection

At a glance

Full specifications

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