Side by side

Hemel HD24 AutomaticvsUndone 420 Cali Automatic

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
See the full HD24 Automatic
420 Cali Automatic
Undone420 Cali Automatic
MSRP $340
See the full 420 Cali Automatic
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Buy used on eBay ↗
Buy from Undone ↗
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At a glance

11 of 29 specs differ
Diameter
HD24 Automatic40mm
420 Cali Automatic40mm
Power Reserve
HD24 Automatic—
420 Cali Automatic—
Water Resistance
HD24 Automatic200m
420 Cali Automatic100m
MSRP
HD24 Automatic$300
420 Cali Automatic$340

Full specifications

Case

6 specs
Category
Diver
—
Thickness
13mm
0mm
Lug-to-Lug
48mm
0mm
Lug Width
20mm
0mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

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

Movement

2 specs
Caliber
Seiko NH38
Seiko NH35
Power Reserve
0h
—

Pricing

1 specs
MSRP
$300
$340
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