Side by side
Lum-Tec B64 ChronographvsLongines ULTRA-CHRON CLASSIC
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
23 of 29 specs differDiameter
B64 Chronograph44mm
ULTRA-CHRON CLASSIC37mm
Power Reserve
B64 Chronograph40h
ULTRA-CHRON CLASSIC52h
Water Resistance
B64 Chronograph100m
ULTRA-CHRON CLASSIC50m
MSRP
B64 Chronograph$545
ULTRA-CHRON CLASSIC$3,900
Full specifications
Case
9 specsCategory
Chronograph
—
Diameter
44mm
37mm
Thickness
—
10.95mm
Lug-to-Lug
51.5mm
44.6mm
Lug Width
22mm
19mm
Material
Titanium (DLC coated)
Stainless Steel
Finish
Brushed and polished
—
Water Resistance
100m
50m
Caseback
Solid
Screw-down case back
Crystal & Dial
6 specsCrystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
—
AR Coating
Inner
Both sides
Dial Color
Standard
Silver
Indices
Applied
Applied indexes
Lume
None
Super-LumiNova
Movement
7 specsCaliber
—
L836.6
Beat Rate
28,800 vph
36,000 vph
Power Reserve
40h
52h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date
Pricing
1 specsMSRP
$545
$3,900
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