Side by side
Lum-Tec B64 ChronographvsTudor Black Bay 58 18K
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
21 of 29 specs differDiameter
B64 Chronograph44mm
Black Bay 58 18K39mm
Power Reserve
B64 Chronograph40h
Black Bay 58 18K70h
Water Resistance
B64 Chronograph100m
Black Bay 58 18K200m
MSRP
B64 Chronograph$545
Black Bay 58 18K$22,550
Full specifications
Case
9 specsCategory
Chronograph
Diver
Diameter
44mm
39mm
Thickness
—
12.7mm
Lug-to-Lug
51.5mm
46mm
Lug Width
22mm
20mm
Material
Titanium (DLC coated)
18k Yellow Gold
Finish
Brushed and polished
Satin
Water Resistance
100m
200m
Caseback
Solid
Solid screw-down
Crystal & Dial
5 specsCrystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
Standard
Green
Indices
Applied
—
Movement
6 specsCaliber
—
MT5400
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Pricing
1 specsMSRP
$545
$22,550
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