Side by side
Marnaut Safe Harbour 100CvsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Safe Harbour 100C39mm
Prospex Sea41.3mm
Power Reserve
Safe Harbour 100C41h
Prospex Sea72h
Water Resistance
Safe Harbour 100C100m
Prospex Sea300m
MSRP
Safe Harbour 100C$899
Prospex Sea$1,100
Full specifications
Case
5 specsCategory
—
Diver
Diameter
39mm
41.3mm
Thickness
13mm
12.5mm
Lug-to-Lug
45mm
48.2mm
Water Resistance
100m
300m
Crystal & Dial
2 specsAR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Sellita SW200-1
6R55
Power Reserve
41h
72h
Jewels
25
24
Pricing
1 specsMSRP
$899
$1,100
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Marnaut Safe Harbour 100C vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Marnaut Safe Harbour 100C Safe Harbour Classic 100 (cushion case, multi-subdial complication, applied batons)vsSeiko Prospex SeaPompeak Sub-AquaticvsSeiko Prospex SeaEza 1972 DivervsSeiko Prospex SeaCircula Watches SuperSportvsSeiko Prospex SeaBorealis Watch Co. Estoril 300 GMTvsMarnaut Safe Harbour 100CMarnaut Safe Harbour 100CvsBorealis Watch Co. Jamanta