Side by side

Sheffield 1A 40mmvsSpinnaker Dumas GMT

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

Add a watch
1A 40mm
Sheffield1A 40mm
MSRP $228
Dumas GMT
SpinnakerDumas GMT
MSRP $399
Buy from Sheffield ↗
Buy used on eBay ↗
Buy from Spinnaker ↗
Buy used on eBay ↗

At a glance

9 of 29 specs differ
Diameter
1A 40mm40mm
Dumas GMT44mm
Power Reserve
1A 40mm40h
Dumas GMT40h
Water Resistance
1A 40mm200m
Dumas GMT300m
MSRP
1A 40mm$228
Dumas GMT$399

Full specifications

Case

6 specs
Category
—
GMT
Diameter
40mm
44mm
Thickness
13mm
15mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
—
Blue

Movement

1 specs
Caliber
Seiko NH35
Seiko NH34A

Pricing

1 specs
MSRP
$228
$399
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.

Filippo Loreti Watches The Joker Madness
Filippo Loreti Watchesmicro
Joker

The Joker Madness

Ref. the-joker-madness
40mm·Automatic·200m WR
$349MSRP
—Used
Spinnaker Fleuss GMT
Spinnakermicro

Fleuss GMT

9 watches · 19 variantsFleuss
43mm·Automatic·150m WR
$299MSRP
—Used
Filippo Loreti Watches Aquadiver
Filippo Loreti Watchesmicro

Aquadiver

10 variantsRef. aquadiver-automatic-red
40mm·Automatic·200m WR
$410MSRP
—Used
Spinnaker Tesei Mille Metri GMT
Spinnakermicro

Tesei Mille Metri GMT

4 watches · 10 variantsTesei
44mm·Automatic·1000m WR
$559MSRP
—Used
Redux COURG: Zero-Hour
Reduxmicro

COURG: Zero-Hour

Ref. the-courg-watch-zero-hour-39mm
39mm·Automatic·200m WR
$499MSRP
—Used
Islander Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316
Islandermicro
Under $50

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316

9 watches · 9 variantsUnder $50
40mm·Automatic·200m WR
$379MSRP
—Used
Redux COURG: Minimalist
Reduxmicro

COURG: Minimalist

Ref. the-courg-watch-minimalist-39mm
39mm·Automatic·200m WR
$450MSRP
—Used
Shiro Kara Daibāzu: Cookie Monster SUB
Shiro Karamicro

Daibāzu: Cookie Monster SUB

Ref. daibazu-cookie-monster-sub
40mm·Automatic·100m WR
$438MSRP
—Used
All alternatives to the 1A 40mm →All alternatives to the Dumas GMT →
Explore the full catalog

Follow this matchup

Get a note when Sheffield 1A 40mm vs Spinnaker Dumas 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.

Sheffield 1A SCR II BluevsSpinnaker Dumas GMTSheffield 1AvsSpinnaker Dumas GMTSheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no datevsSpinnaker Dumas GMTFilippo Loreti Watches The Joker MadnessvsSpinnaker Dumas GMTSheffield 1A 40mmvsSpinnaker Fleuss GMTSheffield 1A 40mmvsSpinnaker Tesei Mille Metri GMT
Edit this comparisonAdd another watchExplore more 39–45mm watches