Side by side

Sheffield GMTvsSynchron Poseidon

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

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GMT
SheffieldGMT
Poseidon
SynchronPoseidon
Buy from Sheffield ↗
Buy used on eBay ↗
Buy from Synchron ↗
Buy used on eBay ↗

At a glance

10 of 29 specs differ
Diameter
GMT40mm
Poseidon41mm
Power Reserve
GMT—
Poseidon68h
Water Resistance
GMT200m
Poseidon300m
MSRP
GMT—
Poseidon—

Full specifications

Case

7 specs
Category
GMT
—
Diameter
40mm
41mm
Thickness
13mm
11.9mm
Lug-to-Lug
48mm
45mm
Lug Width
20mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
Blue
Sunshine Yellow

Movement

2 specs
Caliber
Seiko NH34
La Joux-Perret G100
Power Reserve
—
68h
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