Which is cheaper, the Seiko Prospex SPEEDTIMER or the Timefactors PRS-10?

At MSRP the Timefactors PRS-10 is the cheaper of the two at $302, against $2,200 for the Seiko Prospex SPEEDTIMER — a $1,898 gap before any retailer discounting.

Which is bigger, the Seiko Prospex SPEEDTIMER or the Timefactors PRS-10?

The Seiko Prospex SPEEDTIMER wears larger at 42mm versus 39.1mm for the Timefactors PRS-10 — a 2.9mm difference across the dial.

Which has better water resistance, the Seiko Prospex SPEEDTIMER or the Timefactors PRS-10?

The Timefactors PRS-10 is rated to 100m versus 10m for the Seiko Prospex SPEEDTIMER.

What movement does the Seiko Prospex SPEEDTIMER run compared to the Timefactors PRS-10?

Both watches run quartz movements — the Seiko Prospex SPEEDTIMER uses the 5X83 and the Timefactors PRS-10 uses the Ronda 715Li.

Side by side

Seiko Prospex SPEEDTIMERvsTimefactors PRS-10

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

Add a watch

Seiko Prospex SPEEDTIMER

ssh165j1

MSRP $2,200

Timefactors PRS-10

precista-prs-10-sapphire

MSRP $302

Buy from Seiko ↗

Buy used on eBay ↗

Buy from Timefactors ↗

Buy used on eBay ↗

At a glance

11 of 29 specs differ

Diameter

Prospex SPEEDTIMER42mm

PRS-1039.1mm

Power Reserve

Prospex SPEEDTIMER40h

PRS-10—

Water Resistance

Prospex SPEEDTIMER100m

PRS-10100m

MSRP

Prospex SPEEDTIMER$2,200

PRS-10$302

Full specifications

Case

4 specs

Crystal & Dial

3 specs

Crystal Shape

Curved

Flat

AR Coating

Super-clear coating

Inner

Lume

LumiBrite on hands and index(es)

None

Movement

3 specs

Caliber

5X83

Ronda 715Li

Power Reserve

40h

—

Jewels

Pricing

1 specs

MSRP

$2,200

$302

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Drydenmicro

Follow this matchup

Get a note when Seiko Prospex SPEEDTIMER vs Timefactors PRS-10 gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Dryden Chrono Diver Gen 2vsTimefactors PRS-10 Astor + Banks ChronovsTimefactors PRS-10 Dryden Chrono Diver Series 1vsTimefactors PRS-10 Dryden Chrono Diver HometownvsTimefactors PRS-10 CWC (Cabot Watch Company) G40 Quartz WatchvsSeiko Prospex SPEEDTIMER CWC (Cabot Watch Company) G40 Subhunter Quartz WatchvsSeiko Prospex SPEEDTIMER

Edit this comparison Add another watch Explore more 38–43mm watches

Seiko Prospex SPEEDTIMERvsTimefactors PRS-10

At a glance

Full specifications

More watches worth a look

Chrono Diver Gen 2

G40 Quartz Watch

Chrono

G40 Subhunter Quartz Watch

MWC 1985 Pattern Military Divers Watch with Chromed Case and Sapphire Crystal

Fleuss Chronograph

Hawker Hunter Atlas Dual Time Chronograph

Cabot Falcon Quartz Chronograph Watch

Follow this matchup

People also compared