Side by side
Lum-Tec B64 ChronographvsGrand Seiko SBGD228
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
B64 Chronograph44mm
SBGD22844.5mm
Power Reserve
B64 Chronograph40h
SBGD228192h
Water Resistance
B64 Chronograph100m
SBGD228100m
MSRP
B64 Chronograph$545
SBGD228$273,000
Full specifications
Case
5 specsDiameter
44mm
44.5mm
Thickness
—
14.4mm
Lug-to-Lug
51.5mm
52mm
Lug Width
22mm
23mm
Material
Titanium (DLC coated)
Gold
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
Standard
Black
Movement
3 specsCaliber
—
9R01
Type
Automatic
Spring Drive
Power Reserve
40h
192h
Pricing
1 specsMSRP
$545
$273,000
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