Side by side

Astor + Banks Fortitude ProvsSeiko 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.

Fortitude Pro
Astor + BanksFortitude Pro
MSRP $675

At a glance

13 of 29 specs differ
Diameter
Fortitude Pro38.5mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
Fortitude Pro40h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
Fortitude Pro200m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
Fortitude Pro$675
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

5 specs
Category
Sport
Diver
Diameter
38.5mm
44mm
Thickness
11.9mm
13mm
Lug-to-Lug
45.5mm
49.3mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

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

Movement

3 specs
Caliber
Miyota 9015
8L35
Power Reserve
40h
50h
Jewels
25
26

Pricing

1 specs
MSRP
$675
$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.

Astor + Banks Fortitude Pro

Owners and reviewers widely praise the Astor + Banks Fortitude Pro for its scratch-resistant coating, thin and compact 38.5mm case, and versatile dial options. The layered finishing with polished chamfers and comfortable bracelet are frequently highlighted as strong points, contributing to its wearability. One owner notes good timekeeping, while a reviewer states the Miyota 9015 movement is adjusted to +/-10 seconds per day. A potential drawback mentioned is the date numeral appearing in half shadow due to anti-magnetic shielding, and one owner considers the bracelet clasp dated. Overall, owners and reviewers rate the Astor + Banks Fortitude Pro highly for its durable construction and thoughtful design at its price point.

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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