Side by side
Lum-Tec B64 ChronographvsSeiko Prospex Sea Save the Ocean Special Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
B64 Chronograph44mm
Prospex Sea Save the Ocean Special Edition45mm
Power Reserve
B64 Chronograph40h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
B64 Chronograph100m
Prospex Sea Save the Ocean Special Edition200m
MSRP
B64 Chronograph$545
Prospex Sea Save the Ocean Special Edition$625
Full specifications
Case
6 specsCategory
Chronograph
Diver
Diameter
44mm
45mm
Thickness
—
13.2mm
Lug-to-Lug
51.5mm
47.7mm
Material
Titanium (DLC coated)
Stainless Steel
Water Resistance
100m
200m
Crystal & Dial
4 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Standard
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
—
4R36
Power Reserve
40h
41h
Jewels
25
24
Pricing
1 specsMSRP
$545
$625
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