Side by side
Lum-Tec B68 Day DatevsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
B68 Day Date44mm
Prospex Sea34mm
Power Reserve
B68 Day Date40h
Prospex Sea40h
Water Resistance
B68 Day Date200m
Prospex Sea200m
MSRP
B68 Day Date$595
Prospex Sea$795
Full specifications
Case
6 specsCategory
Sport
Diver
Diameter
44mm
34mm
Thickness
—
8.7mm
Lug-to-Lug
51.5mm
40.8mm
Lug Width
22mm
16mm
Material
316L Stainless Steel (DLC coated)
Stainless Steel
Crystal & Dial
4 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
B68 Day Date
Black
Lume
None
LumiBrite on hands and index(es)
Movement
1 specsCaliber
Ronda 515
6N01
Pricing
1 specsMSRP
$595
$795
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