Side by side
Lum-Tec B66 Day DatevsSeestern S471 Double Crown Diver
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
B66 Day Date44mm
S471 Double Crown Diver38mm
Power Reserve
B66 Day Date40h
S471 Double Crown Diver35h+h
Water Resistance
B66 Day Date100m
S471 Double Crown Diver100m
MSRP
B66 Day Date$545
S471 Double Crown Diver$179
Full specifications
Case
6 specsCategory
Sport
Diver
Diameter
44mm
38mm
Thickness
—
12mm
Lug-to-Lug
51.5mm
40.3mm
Lug Width
22mm
20mm
Material
Titanium (DLC coated)
316L Stainless Steel
Crystal & Dial
2 specsCrystal
Domed Sapphire
Sapphire
Dial Color
Standard
Blue
Movement
5 specsCaliber
—
Miyota 8215
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
35h+h
Jewels
25
21
Complications
None
Date
Pricing
1 specsMSRP
$545
$179
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