Side by side
Lum-Tec 39mm Combat B74 GMTvsSeiko 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
39mm Combat B74 GMT39mm
Prospex Sea41mm
Power Reserve
39mm Combat B74 GMT40h
Prospex Sea70h
Water Resistance
39mm Combat B74 GMT200m
Prospex Sea200m
MSRP
39mm Combat B74 GMT$931
Prospex Sea$900
Full specifications
Case
4 specsCategory
—
Diver
Diameter
39mm
41mm
Thickness
12mm
12.3mm
Lug-to-Lug
46mm
46.9mm
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Miyota 9075
Seiko 6R35
Power Reserve
40h
70h
Jewels
25
24
Pricing
1 specsMSRP
$931
$900
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