Side by side

Fortis Novonaut N-42vsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

At a glance

15 of 29 specs differ
Diameter
Novonaut N-4242mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
Novonaut N-4260h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
Novonaut N-42300m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
Novonaut N-42$5,230
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
42mm
44mm
Thickness
14.6mm
13mm
Lug-to-Lug
49.3mm
Lug Width
21mm
20mm
Material
Titanium / Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Titanium Legacy
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Manufacture Caliber WERK 17
8L35
Power Reserve
60h
50h
Jewels
36
26

Pricing

1 specs
MSRP
$5,230
$3,300

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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.

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

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