Side by side
Lum-Tec B67 Day DatevsSerket Watch Co Reef Mariana
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
B67 Day Date44mm
Reef Mariana40mm
Power Reserve
B67 Day Date40h
Reef Mariana—
Water Resistance
B67 Day Date200m
Reef Mariana200m
MSRP
B67 Day Date$545
Reef Mariana$449
Full specifications
Case
6 specsCategory
Sport
—
Diameter
44mm
40mm
Thickness
—
13.2mm
Lug-to-Lug
51.5mm
47.5mm
Lug Width
22mm
20mm
Material
316L Stainless Steel (DLC coated)
Stainless Steel
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
Dial Color
B67 Day Date
Orange
Lume
None
BGW9
Movement
3 specsCaliber
Ronda 515
Seiko NH35
Type
Quartz
Automatic
Power Reserve
40h
—
Pricing
1 specsMSRP
$545
$449
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