Side by side
Chronotechna NanoBlackvsSerket Watch Co Reef Mariana
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
Reef Mariana40mm
Power Reserve
NanoBlack38h
Reef Mariana—
Water Resistance
NanoBlack100m
Reef Mariana200m
MSRP
NanoBlack—
Reef Mariana$449
Full specifications
Case
5 specsDiameter
42mm
40mm
Thickness
11.65mm
13.2mm
Lug-to-Lug
47.90mm
47.5mm
Lug Width
22mm
20mm
Water Resistance
100m
200m
Crystal & Dial
2 specsDial Color
White
Orange
Lume
None
BGW9
Movement
2 specsCaliber
Sellita SW200-1
Seiko NH35
Power Reserve
38h
—
Pricing
1 specsMSRP
—
$449
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