Side by side

Fortis Novonaut N-42vsTudor Black Bay One 31

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Novonaut N-42
FortisNovonaut N-42
MSRP $5,230
Black Bay One 31
TudorBlack Bay One 31
MSRP $4,600

At a glance

14 of 29 specs differ
Diameter
Novonaut N-4242mm
Black Bay One 3131mm
Power Reserve
Novonaut N-4260h
Black Bay One 3150h
Water Resistance
Novonaut N-42300m
Black Bay One 31100m
MSRP
Novonaut N-42$5,230
Black Bay One 31$4,600

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
42mm
31mm
Thickness
14.6mm
9.5mm
Lug-to-Lug
46mm
Lug Width
21mm
17mm
Material
Titanium / Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

1 specs
Dial Color
Titanium Legacy
Anthracite

Movement

3 specs
Caliber
Manufacture Caliber WERK 17
MT5201
Power Reserve
60h
50h
Jewels
36
25

Pricing

1 specs
MSRP
$5,230
$4,600

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Fortis Novonaut N-42

Owners widely praise the Fortis B-42 Official Cosmonauts for its stunning fit and finish, excellent legibility, and a precise, grippy bezel, with one owner calling its bracelet the nicest they've ever owned. The Fortis Novonaut N-42 is described as a flawless beast with a WERK 17 column-wheel chronograph movement, featuring enhanced shock resistance and COSC adjustment, and is noted as a handsome tool watch with a beautiful dial and nice pusher action. However, the 42mm case of the B-42 wears larger than expected, and the Novonaut's 44mm case and chunky bracelet make it too large and heavy for many. The Fortis Titanium Legacy is a modern pilot's watch with a titanium case and bracelet, featuring a Kenissi WERK 13 movement with a 70-hour power reserve and three time zones. Overall, owners and reviewers highly regard the Fortis Titanium Legacy for its robust tool watch design and advanced movement technology, despite some concerns about case size and bracelet adjustability.

Tudor Black Bay One 31

Owners widely report the Tudor Black Bay One 31's polished case and bracelet scratch easily, though its wearability under gloves and robust movement are praised. Some desire more micro-adjustment options on the clasp, and a lack of contrast between the silver dial and hands is noted. The 31mm size may be a consideration for daily wear due to its 50-hour power reserve. On balance, owners and reviewers appreciate the Tudor Black Bay One 31 for its comfortable wearability and robust movement, despite concerns about case scratching and clasp adjustability.

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