Side by side
Borealis Watch Co. JamantavsSeiko 5 Sports Field series
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Jamanta42.50mm
5 Sports Field series39.4mm
Power Reserve
Jamanta40h
5 Sports Field series41h
Water Resistance
Jamanta300m
5 Sports Field series100m
MSRP
Jamanta$415
5 Sports Field series$315
Full specifications
Case
6 specsCategory
Diver
Sport
Diameter
42.50mm
39.4mm
Thickness
13.30mm
13.2mm
Lug-to-Lug
50.40mm
48.1mm
Lug Width
22mm
20mm
Water Resistance
300m
100m
Crystal & Dial
3 specsCrystal
Sapphire
Hardlex
Crystal Shape
Flat
Curved
Lume
BGW9
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 9015
4R36
Power Reserve
40h
41h
Jewels
25
24
Pricing
1 specsMSRP
$415
$315
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