Which is cheaper, the Hemel Sky Racer Mechanical or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

At MSRP the Hemel Sky Racer Mechanical is the cheaper of the two at $550, against $2,500 for the Seiko Prospex SPEEDTIMER Mechanical Chronograph — a $1,950 gap before any retailer discounting.

Which is bigger, the Hemel Sky Racer Mechanical or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Hemel Sky Racer Mechanical wears larger at 43mm versus 42mm for the Seiko Prospex SPEEDTIMER Mechanical Chronograph — a 1mm difference across the dial.

Which has better water resistance, the Hemel Sky Racer Mechanical or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Hemel Sky Racer Mechanical is rated to 50m versus 10m for the Seiko Prospex SPEEDTIMER Mechanical Chronograph.

Which has a longer power reserve, the Hemel Sky Racer Mechanical or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph carries a 45-hour power reserve against 40 hours on the Hemel Sky Racer Mechanical.

What movement does the Hemel Sky Racer Mechanical run compared to the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Hemel Sky Racer Mechanical runs a manual caliber (Seagull ST19), while the Seiko Prospex SPEEDTIMER Mechanical Chronograph runs a automatic (8R48).

Side by side

Hemel Sky Racer MechanicalvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

Seiko Prospex SPEEDTIMER Mechanical Chronograph

srq047j1

MSRP $2,500

At a glance

14 of 29 specs differ

Diameter

Sky Racer Mechanical43mm

Prospex SPEEDTIMER Mechanical Chronograph42mm

Power Reserve

Sky Racer Mechanical40h

Prospex SPEEDTIMER Mechanical Chronograph45h

Water Resistance

Sky Racer Mechanical50m

Prospex SPEEDTIMER Mechanical Chronograph100m

MSRP

Sky Racer Mechanical$550

Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

5 specs

Diameter

43mm

42mm

Thickness

14mm

14.6mm

Lug-to-Lug

49mm

49.5mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

50m

100m

Crystal & Dial

4 specs

Crystal

Domed Sapphire

Sapphire

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

Seagull ST19

8R48

Type

Manual

Automatic

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$550

$2,500

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