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Lum-Tec B71vsPraesidus 42mm Automatic

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

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B71
Lum-TecB71
MSRP $506
See the full B71
42mm Automatic
Praesidus42mm Automatic
MSRP $269
See the full 42mm Automatic
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At a glance

12 of 29 specs differ
Diameter
B7144mm
42mm Automatic38mm
Power Reserve
B71—
42mm Automatic—
Water Resistance
B71200m
42mm Automatic100m
MSRP
B71$506
42mm Automatic$269

Full specifications

Case

7 specs
Category
Sport
Field
Diameter
44mm
38mm
Thickness
—
11mm
Lug-to-Lug
51.5mm
45mm
Lug Width
22mm
18mm
Material
316L Stainless Steel (DLC coated)
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
B71
42mm Automatic

Movement

2 specs
Caliber
Ronda 515
Seiko NH35
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$506
$269
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