Side by side
Borealis Watch Co. JamantavsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Jamanta42.50mm
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Power Reserve
Jamanta40h
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Water Resistance
Jamanta300m
Prospex Sea 1968 Heritage Diver's GMT Watch300m
MSRP
Jamanta$415
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700
Full specifications
Case
4 specsDiameter
42.50mm
42mm
Thickness
13.30mm
13.3mm
Lug-to-Lug
50.40mm
48.6mm
Lug Width
22mm
20mm
Crystal & Dial
2 specsAR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Miyota 9015
6R54
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
$415
$1,700
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