Side by side

Lum-Tec B64 ChronographvsGrand Seiko SBGM221

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

B64 Chronograph
Lum-TecB64 Chronograph
MSRP $545
SBGM221
Grand SeikoSBGM221
MSRP $5,400

At a glance

13 of 29 specs differ
Diameter
B64 Chronograph44mm
SBGM22139.5mm
Power Reserve
B64 Chronograph40h
SBGM22172h
Water Resistance
B64 Chronograph100m
SBGM22130m
MSRP
B64 Chronograph$545
SBGM221$5,400

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
44mm
39.5mm
Thickness
—
13.7mm
Lug-to-Lug
51.5mm
46.9mm
Lug Width
22mm
19mm
Material
Titanium (DLC coated)
Stainless Steel
Water Resistance
100m
30m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
Standard
Black

Movement

2 specs
Caliber
—
9S66
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$545
$5,400

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