Side by side
Sheffield 1A 40mmvsWolbrook JetFlyer Automatic Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
1A 40mm40mm
JetFlyer Automatic Chronograph38mm
Power Reserve
1A 40mm40h
JetFlyer Automatic Chronograph40h
Water Resistance
1A 40mm200m
JetFlyer Automatic Chronograph100m
MSRP
1A 40mm$228
JetFlyer Automatic Chronograph$845
Full specifications
Case
6 specsCategory
—
Chronograph
Diameter
40mm
38mm
Thickness
13mm
12.1mm
Lug-to-Lug
48mm
46mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m
Crystal & Dial
2 specsCrystal
Sapphire
Domed Sapphire
Dial Color
—
Black
Movement
1 specsCaliber
Seiko NH35
Jeambrun PS 6402
Pricing
1 specsMSRP
$228
$845
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