Side by side

Sheffield 1AvsSynchron Poseidon

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

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1A
Sheffield1A
MSRP $223
Poseidon
SynchronPoseidon
Buy from Sheffield ↗
Buy used on eBay ↗
Buy from Synchron ↗
Buy used on eBay ↗

At a glance

12 of 29 specs differ
Diameter
1A40mm
Poseidon41mm
Power Reserve
1A—
Poseidon68h
Water Resistance
1A200m
Poseidon300m
MSRP
1A$223
Poseidon—

Full specifications

Case

7 specs
Category
Diver
—
Diameter
40mm
41mm
Thickness
12.8mm
11.9mm
Lug-to-Lug
46mm
45mm
Lug Width
20mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

2 specs
Dial Color
White/Blue
Sunshine Yellow
Lume
Swiss blue lume
None

Movement

2 specs
Caliber
Seiko NH35A
La Joux-Perret G100
Power Reserve
—
68h

Pricing

1 specs
MSRP
$223
—
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