Side by side
Seiko Prospex SeavsMarnaut Safe Harbour 100C
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Prospex Sea42mm
Safe Harbour 100C39mm
Power Reserve
Prospex Sea72h
Safe Harbour 100C41h
Water Resistance
Prospex Sea300m
Safe Harbour 100C100m
MSRP
Prospex Sea—
Safe Harbour 100C$899
Full specifications
Case
5 specsCategory
Diver
—
Diameter
42mm
39mm
Thickness
13.3mm
13mm
Lug-to-Lug
48.6mm
45mm
Water Resistance
300m
100m
Crystal & Dial
2 specsAR Coating
Anti-reflective coating on inner surface
Inner
Lume
LumiBrite on hands, index(es) and bezel
None
Movement
3 specsCaliber
6R54
Sellita SW200-1
Power Reserve
72h
41h
Jewels
24
25
Pricing
1 specsMSRP
—
$899
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 Seiko Prospex Sea vs Marnaut Safe Harbour 100C 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 100CvsBorealis Watch Co. JamantaBorealis Watch Co. Caloura 300mvsMarnaut Safe Harbour 100CBorealis Watch Co. Estoril 300 GMTvsMarnaut Safe Harbour 100CMarnaut Safe Harbour 100CvsBoldr Odyssey FreediverSeiko Prospex SeavsMarnaut Safe Harbour 100C Safe Harbour Classic 100 (cushion case, multi-subdial complication, applied batons)Seiko Prospex SeavsPompeak Sub-Aquatic