Side by side
Hemel HD24 AutomaticvsSeestern S456 GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
HD24 Automatic40mm
S456 GMT41mm
Power Reserve
HD24 Automatic40h
S456 GMT41hh
Water Resistance
HD24 Automatic200m
S456 GMT200m
MSRP
HD24 Automatic$300
S456 GMT$299
Full specifications
Case
4 specsCategory
Diver
GMT
Diameter
40mm
41mm
Lug-to-Lug
48mm
49mm
Finish
Brushed and polished
Brushed + Polished
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
Dial Color
Gallant USAF Edition
Sunray style, applied and Diamond cut Indices, C1 lume
Lume
None
C1
Movement
5 specsCaliber
Seiko NH38A
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT
Pricing
1 specsMSRP
$300
$299
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