Side by side

Hemel HD24 AutomaticvsJack Mason Strat-o-timer GMT

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

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HD24 Automatic
HemelHD24 Automatic
MSRP $300
Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,099
Buy from Hemel ↗
Buy used on eBay ↗
Buy from Jack Mason ↗
Buy used on eBay ↗

At a glance

9 of 29 specs differ
Diameter
HD24 Automatic40mm
Strat-o-timer GMT40mm
Power Reserve
HD24 Automatic40h
Strat-o-timer GMT42h
Water Resistance
HD24 Automatic200m
Strat-o-timer GMT200m
MSRP
HD24 Automatic$300
Strat-o-timer GMT$1,099

Full specifications

Case

4 specs
Category
Diver
—
Thickness
13mm
13.2mm
Lug-to-Lug
48mm
47mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Gallant USAF Edition
—

Movement

2 specs
Caliber
Seiko NH38A
Miyota 9075
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$300
$1,099
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