Side by side

Lum-Tec B64 ChronographvsGrand Seiko SBGJ249

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

B64 Chronograph
Lum-TecB64 Chronograph
MSRP $545
SBGJ249
Grand SeikoSBGJ249
MSRP $7,700

At a glance

13 of 29 specs differ
Diameter
B64 Chronograph44mm
SBGJ24939.5mm
Power Reserve
B64 Chronograph40h
SBGJ24955h
Water Resistance
B64 Chronograph100m
SBGJ24930m
MSRP
B64 Chronograph$545
SBGJ249$7,700

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
44mm
39.5mm
Thickness
—
14.1mm
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
—
9S86
Power Reserve
40h
55h

Pricing

1 specs
MSRP
$545
$7,700

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