Side by side

Lum-Tec B66 Day DatevsSpinnaker Dumas Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

B66 Day Date
Lum-TecB66 Day Date
MSRP $545
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239

At a glance

9 of 29 specs differ
Diameter
B66 Day Date44mm
Dumas Automatic44mm
Power Reserve
B66 Day Date40h
Dumas Automatic40h
Water Resistance
B66 Day Date100m
Dumas Automatic300m
MSRP
B66 Day Date$545
Dumas Automatic$239

Full specifications

Case

5 specs
Category
Sport
Diver
Thickness
—
15mm
Lug-to-Lug
51.5mm
48mm
Material
Titanium (DLC coated)
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Standard
Blue

Movement

1 specs
Caliber
—
SII NH35A

Pricing

1 specs
MSRP
$545
$239

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