Side by side
Borealis Watch Co. JamantavsTudor Black Bay 58
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
17 of 29 specs differDiameter
Jamanta42.50mm
Black Bay 5839mm
Power Reserve
Jamanta40h
Black Bay 5865h
Water Resistance
Jamanta300m
Black Bay 58200m
MSRP
Jamanta$415
Black Bay 58$5,350
Full specifications
Case
7 specsDiameter
42.50mm
39mm
Thickness
13.30mm
11.7mm
Lug-to-Lug
50.40mm
46mm
Lug Width
22mm
20mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down
Crystal & Dial
3 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Lume
BGW9
None
Movement
6 specsCaliber
Miyota 9015
MT5400-U
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
65h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Pricing
1 specsMSRP
$415
$5,350
Follow this matchup
Get a note when Borealis Watch Co. Jamanta vs Tudor Black Bay 58 gets more votes, a community discussion, or a price drop. No account needed.
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Tudor Black Bay 58vsZelos Great White 43Phoibos Apollo TitaniumvsTudor Black Bay 58Phoibos Great WallvsTudor Black Bay 58Tudor Black Bay 58vsZelos Thresher 44Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302vsBorealis Watch Co. JamantaBorealis Watch Co. JamantavsGalo Super200 Dark Edition