Side by side

Seiko Prospex SeavsSheffield GMT

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

Add a watch
Prospex Sea
SeikoProspex Sea
GMT
SheffieldGMT
Buy from Seiko ↗
Buy used on eBay ↗
Buy from Sheffield ↗
Buy used on eBay ↗

At a glance

11 of 29 specs differ
Diameter
Prospex Sea42mm
GMT40mm
Power Reserve
Prospex Sea72h
GMT—
Water Resistance
Prospex Sea300m
GMT200m
MSRP
Prospex Sea—
GMT—

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
42mm
40mm
Thickness
13.3mm
13mm
Lug-to-Lug
48.6mm
48mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Blue
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
6R54
Seiko NH34
Power Reserve
72h
—
Jewels
24
25
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.

Borealis Watch Co. Jamanta
Borealis Watch Co.micro

Jamanta

5 variantsJamanta
42.50mm·Automatic·300m WR
$415MSRP
—Used
Islander Islander JFK Automatic GMT Watch with Batman Dial #ISL-338
Islandermicro
Under $50

Islander JFK Automatic GMT Watch with Batman Dial #ISL-338

9 watches · 9 variantsUnder $50
42mm·Automatic·200m WR
$429MSRP
—Used
Borealis Watch Co. Caloura 300m
Borealis Watch Co.micro

Caloura 300m

4 variantsCaloura 300m
42mm·Automatic·300m WR
$275MSRP
—Used
Spinnaker Bradner GMT
Spinnakermicro

Bradner GMT

4 watches · 30 variantsBradner
42mm·Automatic·180m WR
$299MSRP
—Used
Boldr Odyssey Freediver
Boldrmicro

Odyssey Freediver

7 variantsRef. odyssey-freediver-202
40mm·Automatic·300m WR
$649MSRP
—Used
Manufaktur Waldhoff Atlas GMT
Manufaktur Waldhoffmicro

Atlas GMT

3 variantsRef. atlas-gmt-vanuatu-1
41mm·Automatic·300m WR
$548MSRP
—Used
Baltic Aquascaphe Titanium
Balticmicro

Aquascaphe Titanium

2 variantsAquascaphe Titanium
41mm·Automatic·300m WR
$788MSRP
—Used
Vesuviate Watches Volare
Vesuviate Watchesmicro

Volare

7 variantsRef.
41mm·Automatic·200m WR
—MSRP
—Used
All alternatives to the Prospex Sea →All alternatives to the GMT →
Explore the full catalog

Follow this matchup

Get a note when Seiko Prospex Sea vs Sheffield GMT 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.

Borealis Watch Co. JamantavsSheffield GMTBorealis Watch Co. Caloura 300mvsSheffield GMTBorealis Watch Co. Estoril 300 GMTvsSheffield GMTBoldr Odyssey FreedivervsSheffield GMTSeiko Prospex SeavsIslander JFK Automatic GMT Watch with Batman Dial #ISL-338Seiko Prospex SeavsSpinnaker Bradner GMT
Edit this comparisonAdd another watchExplore more 39–43mm watches