Side by side
Chronotechna NanoBlackvsSeestern S443 Column Wheel Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
17 of 29 specs differDiameter
NanoBlack42mm
S443 Column Wheel Chronograph40mm
Power Reserve
NanoBlack38h
S443 Column Wheel Chronograph45hh
Water Resistance
NanoBlack100m
S443 Column Wheel Chronograph50m
MSRP
NanoBlack—
S443 Column Wheel Chronograph$10
Full specifications
Case
7 specsCategory
—
Chronograph
Diameter
42mm
40mm
Thickness
11.65mm
13mm
Lug-to-Lug
47.90mm
48.6mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
50m
Crystal & Dial
3 specsDial Color
White
Pink
Indices
Applied
3D
Lume
None
Super BGW9
Movement
6 specsCaliber
Sellita SW200-1
Seagull ST1901
Type
Automatic
Manual
Beat Rate
28,800 vph
3 vph
Power Reserve
38h
45hh
Jewels
25
21
Complications
None
Chronograph, Column Wheel
Pricing
1 specsMSRP
—
$10
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