Side by side

Aera Instruments D-1vsHalios Seaforth IV

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

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D-1
Aera InstrumentsD-1
MSRP $2,000
See the full D-1
Seaforth IV
HaliosSeaforth IV
MSRP $765
See the full Seaforth IV
Buy from Aera Instruments ↗
Buy used on eBay ↗
Buy from Halios ↗
Buy used on eBay ↗

At a glance

11 of 29 specs differ
Diameter
D-144mm
Seaforth IV40mm
Power Reserve
D-141h
Seaforth IV40h
Water Resistance
D-1300m
Seaforth IV200m
MSRP
D-1$2,000
Seaforth IV$765

Full specifications

Case

7 specs
Category
—
Diver
Diameter
44mm
40mm
Thickness
15.9mm
12.4mm
Lug-to-Lug
49.55mm
46.5mm
Lug Width
22mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

2 specs
Crystal
Sapphire
Sapphire (double-domed)
Dial Color
—
Blue

Movement

1 specs
Power Reserve
41h
40h

Pricing

1 specs
MSRP
$2,000
$765
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