Side by side
Chronotechna NanoBlackvsSheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
NanoBlack42mm
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)38mm
Power Reserve
NanoBlack38h
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)—
Water Resistance
NanoBlack100m
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)200m
MSRP
NanoBlack—
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)$223
Full specifications
Case
6 specsCategory
—
Diver
Diameter
42mm
38mm
Thickness
11.65mm
12.8mm
Lug-to-Lug
47.90mm
46mm
Lug Width
22mm
20mm
Water Resistance
100m
200m
Crystal & Dial
1 specsDial Color
White
Blue
Movement
2 specsCaliber
Sellita SW200-1
Seiko NH35
Power Reserve
38h
—
Pricing
1 specsMSRP
—
$223
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