Side by side
Lum-Tec B64 ChronographvsOak & Oscar The Olmsted Matte
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
17 of 29 specs differDiameter
B64 Chronograph44mm
The Olmsted Matte38mm
Power Reserve
B64 Chronograph40h
The Olmsted Matte42h
Water Resistance
B64 Chronograph100m
The Olmsted Matte100m
MSRP
B64 Chronograph$545
The Olmsted Matte$1,775
Full specifications
Case
7 specsCategory
Chronograph
Field
Diameter
44mm
38mm
Thickness
—
10.8mm
Lug-to-Lug
51.5mm
44.9mm
Lug Width
22mm
20mm
Material
Titanium (DLC coated)
316L Stainless Steel (matte ceramic coated)
Caseback
Solid
Solid screw-down
Crystal & Dial
5 specsCrystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Standard
Black
Lume
None
Super-LumiNova
Movement
4 specsCaliber
—
Sellita SW300
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
42h
Complications
None
GMT, Chronograph, Date
Pricing
1 specsMSRP
$545
$1,775
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