Which is cheaper, the Seiko Prospex SPEEDTIMER Mechanical or the Wolbrook JetFlyer Automatic Chronograph?

At MSRP the Wolbrook JetFlyer Automatic Chronograph is the cheaper of the two at $845, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $150 gap before any retailer discounting.

Which is bigger, the Seiko Prospex SPEEDTIMER Mechanical or the Wolbrook JetFlyer Automatic Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical wears larger at 39.5mm versus 38mm for the Wolbrook JetFlyer Automatic Chronograph — a 1.5mm difference across the dial.

Which has better water resistance, the Seiko Prospex SPEEDTIMER Mechanical or the Wolbrook JetFlyer Automatic Chronograph?

The Wolbrook JetFlyer Automatic Chronograph is rated to 100m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical.

Which has a longer power reserve, the Seiko Prospex SPEEDTIMER Mechanical or the Wolbrook JetFlyer Automatic Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical carries a 72-hour power reserve against 40 hours on the Wolbrook JetFlyer Automatic Chronograph.

Side by side

Seiko Prospex SPEEDTIMER MechanicalvsWolbrook JetFlyer Automatic Chronograph

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

Seiko Prospex SPEEDTIMER Mechanical

spb513j1

MSRP $995

Wolbrook JetFlyer Automatic Chronograph

26-JFCA-001-LR6-BLK-STL

MSRP $845

At a glance

13 of 29 specs differ

Diameter

Prospex SPEEDTIMER Mechanical39.5mm

JetFlyer Automatic Chronograph38mm

Power Reserve

Prospex SPEEDTIMER Mechanical72h

JetFlyer Automatic Chronograph40h

Water Resistance

Prospex SPEEDTIMER Mechanical200m

JetFlyer Automatic Chronograph100m

MSRP

Prospex SPEEDTIMER Mechanical$995

JetFlyer Automatic Chronograph$845

Full specifications

Case

5 specs

Diameter

39.5mm

38mm

Thickness

12mm

12.1mm

Lug-to-Lug

44.5mm

46mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

200m

100m

Crystal & Dial

4 specs

Crystal

Sapphire

Domed Sapphire

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands and index(es)

None

Movement

3 specs

Caliber

6R55

—

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$995

$845

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