Side by side
Serket Watch Co Reef XvsSinn U18
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Reef X42.5mm
U1844mm
Power Reserve
Reef X40h
U1842h
Water Resistance
Reef X200m
U182,000m
MSRP
Reef X$399
U18$3,488
Full specifications
Case
8 specsCategory
—
Diver
Diameter
42.5mm
44mm
Thickness
12.7mm
15.5mm
Lug-to-Lug
49mm
—
Material
Stainless Steel
high-strength
Finish
Brushed and polished
—
Water Resistance
200m
2000m
Caseback
Solid
—
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
Yellow
Black
Indices
Applied
—
Movement
2 specsCaliber
Miyota 8215
SW300-1
Power Reserve
40h
42h
Pricing
1 specsMSRP
$399
$3,488
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