Which is cheaper, the Seiko Prospex SPEEDTIMER Mechanical or the Timefactors PRECISTA MISSION TIMER PRS-56?

At MSRP the Timefactors PRECISTA MISSION TIMER PRS-56 is the cheaper of the two at $530, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $465 gap before any retailer discounting.

Which is bigger, the Seiko Prospex SPEEDTIMER Mechanical or the Timefactors PRECISTA MISSION TIMER PRS-56?

The Timefactors PRECISTA MISSION TIMER PRS-56 wears larger at 40mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical — a 0.5mm difference across the dial.

Which has better water resistance, the Seiko Prospex SPEEDTIMER Mechanical or the Timefactors PRECISTA MISSION TIMER PRS-56?

The Timefactors PRECISTA MISSION TIMER PRS-56 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 Timefactors PRECISTA MISSION TIMER PRS-56?

The Seiko Prospex SPEEDTIMER Mechanical carries a 72-hour power reserve against 40 hours on the Timefactors PRECISTA MISSION TIMER PRS-56.

What movement does the Seiko Prospex SPEEDTIMER Mechanical run compared to the Timefactors PRECISTA MISSION TIMER PRS-56?

The Seiko Prospex SPEEDTIMER Mechanical runs a automatic caliber (6R55), while the Timefactors PRECISTA MISSION TIMER PRS-56 runs a mecaquartz (ETA 251.264).

Side by side

Seiko Prospex SPEEDTIMER MechanicalvsTimefactors PRECISTA MISSION TIMER PRS-56

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

Add a watch

Seiko Prospex SPEEDTIMER Mechanical

spb513j1

MSRP $995

Timefactors PRECISTA MISSION TIMER PRS-56

precista-mission-timer-prs-56

MSRP $530

Buy from Seiko ↗

Buy used on eBay ↗

Buy from Timefactors ↗

Buy used on eBay ↗

At a glance

13 of 29 specs differ

Diameter

Prospex SPEEDTIMER Mechanical39.5mm

PRECISTA MISSION TIMER PRS-5640mm

Power Reserve

Prospex SPEEDTIMER Mechanical72h

PRECISTA MISSION TIMER PRS-5640h

Water Resistance

Prospex SPEEDTIMER Mechanical200m

PRECISTA MISSION TIMER PRS-56100m

MSRP

Prospex SPEEDTIMER Mechanical$995

PRECISTA MISSION TIMER PRS-56$530

Full specifications

Case

4 specs

Crystal & Dial

4 specs

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Dial Color

Black

—

Lume

LumiBrite on hands and index(es)

None

Movement

4 specs

Caliber

6R55

ETA 251.264

Type

Automatic

Mecaquartz

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$995

$530

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