Side by side
Lum-Tec B64 ChronographvsTudor Black Bay One 31 S&G
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
B64 Chronograph44mm
Black Bay One 31 S&G31mm
Power Reserve
B64 Chronograph40h
Black Bay One 31 S&G50h
Water Resistance
B64 Chronograph100m
Black Bay One 31 S&G100m
MSRP
B64 Chronograph$545
Black Bay One 31 S&G$6,850
Full specifications
Case
8 specsCategory
Chronograph
—
Diameter
44mm
31mm
Thickness
—
9.5mm
Lug-to-Lug
51.5mm
46mm
Lug Width
22mm
17mm
Material
Titanium (DLC coated)
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Caseback
Solid
Solid screw-down
Crystal & Dial
2 specsCrystal
Domed Sapphire
Sapphire
Dial Color
Standard
Black
Movement
2 specsCaliber
—
MT5201
Power Reserve
40h
50h
Pricing
1 specsMSRP
$545
$6,850
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