Side by side
Lum-Tec B64 ChronographvsGrand Seiko SLGB023
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
B64 Chronograph44mm
SLGB02340.8mm
Power Reserve
B64 Chronograph40h
SLGB02372h
Water Resistance
B64 Chronograph100m
SLGB023300m
MSRP
B64 Chronograph$545
SLGB023$12,400
Full specifications
Case
7 specsCategory
Chronograph
Diver
Diameter
44mm
40.8mm
Thickness
—
12.9mm
Lug-to-Lug
51.5mm
48.5mm
Lug Width
22mm
21mm
Material
Titanium (DLC coated)
Titanium
Water Resistance
100m
300m
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
Standard
Black
Movement
3 specsCaliber
—
9RB1
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Pricing
1 specsMSRP
$545
$12,400
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