Side by side

Lum-Tec B64 ChronographvsPraesidus 42mm Automatic

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

B64 Chronograph
Lum-TecB64 Chronograph
MSRP $545
42mm Automatic
Praesidus42mm Automatic
MSRP $680

At a glance

10 of 29 specs differ
Diameter
B64 Chronograph44mm
42mm Automatic38mm
Power Reserve
B64 Chronograph40h
42mm Automatic40h
Water Resistance
B64 Chronograph100m
42mm Automatic100m
MSRP
B64 Chronograph$545
42mm Automatic$680

Full specifications

Case

6 specs
Category
Chronograph
Field
Diameter
44mm
38mm
Thickness
—
11mm
Lug-to-Lug
51.5mm
45mm
Lug Width
22mm
18mm
Material
Titanium (DLC coated)
316L Stainless Steel

Crystal & Dial

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

Movement

1 specs
Caliber
—
Seiko NH35

Pricing

1 specs
MSRP
$545
$680

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