Side by side
Oblvlo FM SL Day-Date SquarevsSerket Watch Co Reef Mariana
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
FM SL Day-Date Square39mm
Reef Mariana40mm
Power Reserve
FM SL Day-Date Square42h
Reef Mariana—
Water Resistance
FM SL Day-Date Square50m
Reef Mariana200m
MSRP
FM SL Day-Date Square$158
Reef Mariana$449
Full specifications
Case
6 specsCategory
Dress
—
Diameter
39mm
40mm
Thickness
11mm
13.2mm
Lug-to-Lug
46mm
47.5mm
Lug Width
21mm
20mm
Water Resistance
50m
200m
Crystal & Dial
2 specsDial Color
Black
Orange
Lume
None
BGW9
Movement
3 specsCaliber
Miyota 8215
Seiko NH35
Power Reserve
42h
—
Jewels
21
25
Pricing
1 specsMSRP
$158
$449
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