Side by side

Chronotechna NanoBlackvsSheffield 1A 40mm

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

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NanoBlack
ChronotechnaNanoBlack
1A 40mm
Sheffield1A 40mm
MSRP $228
Buy from Chronotechna ↗
Buy used on eBay ↗
Buy from Sheffield ↗
Buy used on eBay ↗

At a glance

9 of 29 specs differ
Diameter
NanoBlack42mm
1A 40mm40mm
Power Reserve
NanoBlack38h
1A 40mm40h
Water Resistance
NanoBlack100m
1A 40mm200m
MSRP
NanoBlack—
1A 40mm$228

Full specifications

Case

5 specs
Diameter
42mm
40mm
Thickness
11.65mm
13mm
Lug-to-Lug
47.90mm
48mm
Lug Width
22mm
20mm
Water Resistance
100m
200m

Crystal & Dial

1 specs
Dial Color
White
—

Movement

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

Pricing

1 specs
MSRP
—
$228
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