Side by side

Lum-Tec B64 ChronographvsSeiko Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition

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

B64 Chronograph
Lum-TecB64 Chronograph
MSRP $545
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition
SeikoProspex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition
MSRP $3,000

At a glance

14 of 29 specs differ
Diameter
B64 Chronograph44mm
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition42.5mm
Power Reserve
B64 Chronograph40h
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition45h
Water Resistance
B64 Chronograph100m
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition100m
MSRP
B64 Chronograph$545
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition$3,000

Full specifications

Case

5 specs
Diameter
44mm
42.5mm
Thickness
—
15.1mm
Lug-to-Lug
51.5mm
50mm
Lug Width
22mm
20mm
Material
Titanium (DLC coated)
Stainless Steel

Crystal & Dial

5 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Standard
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
—
8R46
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$545
$3,000

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