Side by side
Lum-Tec B64 ChronographvsLongines SPIRIT ZULU TIME
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
21 of 29 specs differDiameter
B64 Chronograph44mm
SPIRIT ZULU TIME42mm
Power Reserve
B64 Chronograph40h
SPIRIT ZULU TIME72h
Water Resistance
B64 Chronograph100m
SPIRIT ZULU TIME100m
MSRP
B64 Chronograph$545
SPIRIT ZULU TIME$3,550
Full specifications
Case
7 specsCategory
Chronograph
GMT
Diameter
44mm
42mm
Thickness
—
14.1mm
Lug-to-Lug
51.5mm
49.4mm
Material
Titanium (DLC coated)
Ceramic
Finish
Brushed and polished
—
Caseback
Solid
—
Crystal & Dial
6 specsCrystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
—
AR Coating
Inner
Both sides
Dial Color
Standard
Black
Indices
Applied
Applied Arabic numerals
Lume
None
Super-LumiNova
Movement
7 specsCaliber
—
L844.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
40h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date, 24 hours hand with time zone mechanism
Pricing
1 specsMSRP
$545
$3,550
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