Side by side
Lum-Tec B68 Day DatevsGrand Seiko SBGD223
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
B68 Day Date44mm
SBGD22344.5mm
Power Reserve
B68 Day Date40h
SBGD223192h
Water Resistance
B68 Day Date200m
SBGD223100m
MSRP
B68 Day Date$595
SBGD223$320,000
Full specifications
Case
7 specsCategory
Sport
Chronograph
Diameter
44mm
44.5mm
Thickness
—
14.4mm
Lug-to-Lug
51.5mm
52mm
Lug Width
22mm
23mm
Material
316L Stainless Steel (DLC coated)
Platinum
Water Resistance
200m
100m
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
B68 Day Date
Black
Movement
3 specsCaliber
Ronda 515
9R01
Type
Quartz
Spring Drive
Power Reserve
40h
192h
Pricing
1 specsMSRP
$595
$320,000
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