Which is cheaper, the Hemel Sky Racer Mechanical or the Spinnaker Challenger Automatic?

At MSRP the Spinnaker Challenger Automatic is the cheaper of the two at $289, against $550 for the Hemel Sky Racer Mechanical — a $261 gap before any retailer discounting.

Which is bigger, the Hemel Sky Racer Mechanical or the Spinnaker Challenger Automatic?

The Hemel Sky Racer Mechanical wears larger at 43mm versus 42mm for the Spinnaker Challenger Automatic — a 1mm difference across the dial.

Which has better water resistance, the Hemel Sky Racer Mechanical or the Spinnaker Challenger Automatic?

The Spinnaker Challenger Automatic is rated to 200m versus 50m for the Hemel Sky Racer Mechanical.

What movement does the Hemel Sky Racer Mechanical run compared to the Spinnaker Challenger Automatic?

The Hemel Sky Racer Mechanical runs a manual caliber (Seagull ST19), while the Spinnaker Challenger Automatic runs a automatic (SII NH35A).

Side by side

Hemel Sky Racer MechanicalvsSpinnaker Challenger Automatic

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

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

Spinnaker Challenger Automatic

challenger-automatic-depth-blue-sp-5159-11

MSRP $289

At a glance

11 of 29 specs differ

Diameter

Sky Racer Mechanical43mm

Challenger Automatic42mm

Power Reserve

Sky Racer Mechanical40h

Challenger Automatic40h

Water Resistance

Sky Racer Mechanical50m

Challenger Automatic200m

MSRP

Sky Racer Mechanical$550

Challenger Automatic$289

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Crystal

Domed Sapphire

Sapphire

Dial Color

Black

Blue

Movement

2 specs

Caliber

Seagull ST19

SII NH35A

Type

Manual

Automatic

Pricing

1 specs

MSRP

$550

$289

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