Which is cheaper, the Sheffield Deep Gray 300 or the Seiko Prospex SPEEDTIMER?

At MSRP the Sheffield Deep Gray 300 is the cheaper of the two at $258, against $750 for the Seiko Prospex SPEEDTIMER — a $492 gap before any retailer discounting.

Which is bigger, the Sheffield Deep Gray 300 or the Seiko Prospex SPEEDTIMER?

The Sheffield Deep Gray 300 wears larger at 42mm versus 41.4mm for the Seiko Prospex SPEEDTIMER — a 0.6mm difference across the dial.

Which has better water resistance, the Sheffield Deep Gray 300 or the Seiko Prospex SPEEDTIMER?

The Sheffield Deep Gray 300 is rated to 300m versus 10m for the Seiko Prospex SPEEDTIMER.

What movement does the Sheffield Deep Gray 300 run compared to the Seiko Prospex SPEEDTIMER?

The Sheffield Deep Gray 300 runs a automatic caliber (Seiko NH35), while the Seiko Prospex SPEEDTIMER runs a quartz (V192).

Side by side

Sheffield Deep Gray 300vsSeiko Prospex SPEEDTIMER

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

Add a watch

Sheffield Deep Gray 300

deep-gray-300

MSRP $258

Seiko Prospex SPEEDTIMER

ssc911

MSRP $750

At a glance

13 of 29 specs differ

Diameter

Deep Gray 30042mm

Prospex SPEEDTIMER41.4mm

Power Reserve

Deep Gray 30040h

Prospex SPEEDTIMER40h

Water Resistance

Deep Gray 300300m

Prospex SPEEDTIMER100m

MSRP

Deep Gray 300$258

Prospex SPEEDTIMER$750

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

—

Black

Lume

None

LumiBrite on hands and index(es)

Movement

2 specs

Caliber

Seiko NH35

V192

Type

Automatic

Quartz

Pricing

1 specs

MSRP

—

$750

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.

Noctua Watch Corp.micro

Follow this matchup

Get a note when Sheffield Deep Gray 300 vs Seiko Prospex SPEEDTIMER 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.

Noctua Watch Corp. PD-1vsSeiko Prospex SPEEDTIMER Seiko Prospex SPEEDTIMERvsUgly Watch Co 300mD-RedG Bahrami Watches Ω - 01vsSeiko Prospex SPEEDTIMER Bahrami Watches Ω - 02vsSeiko Prospex SPEEDTIMER Dryden Chrono Diver Gen 2vsSheffield Deep Gray 300 Dryden Chrono Diver Series 1vsSheffield Deep Gray 300

Edit this comparison Add another watch Explore more 40–43mm watches

Sheffield Deep Gray 300vsSeiko Prospex SPEEDTIMER

At a glance

Full specifications

More watches worth a look

PD-1

Chrono Diver Gen 2

300mD-RedG

Ω - 01

Fleuss Chronograph

Reef X Diver

Chrono

300mD

Follow this matchup

People also compared