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Jack Mason Halyard Sport ChronographvsSeiko Astron

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

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Halyard Sport Chronograph
Jack MasonHalyard Sport Chronograph
MSRP $329
Astron
SeikoAstron
MSRP $3,100
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At a glance

12 of 29 specs differ
Diameter
Halyard Sport Chronograph42mm
Astron44.1mm
Power Reserve
Halyard Sport Chronograph40h
Astron40h
Water Resistance
Halyard Sport Chronograph100m
Astron100m
MSRP
Halyard Sport Chronograph$329
Astron$3,100

Full specifications

Case

6 specs
Category
—
Chronograph
Diameter
42mm
44.1mm
Thickness
12mm
14.4mm
Lug-to-Lug
46mm
50mm
Lug Width
20mm
14mm
Material
Stainless Steel
Titanium

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Miyota OS20
5X83
Jewels
25
14

Pricing

1 specs
MSRP
$329
$3,100
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