Side by side

Chronotechna NanoBlackvsHelgray Poseidon Diver (Automatic)

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

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NanoBlack
ChronotechnaNanoBlack
Poseidon Diver (Automatic)
HelgrayPoseidon Diver (Automatic)
MSRP $249
Buy from Chronotechna ↗
Buy used on eBay ↗
Buy from Helgray ↗
Buy used on eBay ↗

At a glance

10 of 29 specs differ
Diameter
NanoBlack42mm
Poseidon Diver (Automatic)40mm
Power Reserve
NanoBlack38h
Poseidon Diver (Automatic)40h
Water Resistance
NanoBlack100m
Poseidon Diver (Automatic)300m
MSRP
NanoBlack—
Poseidon Diver (Automatic)$249

Full specifications

Case

6 specs
Category
—
Diver
Diameter
42mm
40mm
Thickness
11.65mm
12mm
Lug-to-Lug
47.90mm
46mm
Lug Width
22mm
20mm
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
White
Black

Movement

2 specs
Caliber
Sellita SW200-1
NH35 Warranty
Power Reserve
38h
40h

Pricing

1 specs
MSRP
—
$249
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