Side by side
Hemel HD24 AutomaticvsSpinnaker Challenger Automatic
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
8 of 29 specs differDiameter
HD24 Automatic40mm
Challenger Automatic42mm
Power Reserve
HD24 Automatic40h
Challenger Automatic40h
Water Resistance
HD24 Automatic200m
Challenger Automatic200m
MSRP
HD24 Automatic$300
Challenger Automatic$289
Full specifications
Case
4 specsDiameter
40mm
42mm
Thickness
13mm
19mm
Lug-to-Lug
48mm
49.5mm
Lug Width
20mm
22mm
Crystal & Dial
2 specsCrystal
Domed Sapphire
Sapphire
Dial Color
Gallant USAF Edition
Blue
Movement
1 specsCaliber
Seiko NH38A
SII NH35A
Pricing
1 specsMSRP
$300
$289
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