Side by side

Dryden Heartlander AutomaticvsSeiko 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.

Heartlander Automatic
DrydenHeartlander Automatic
MSRP $600

At a glance

14 of 29 specs differ
Diameter
Heartlander Automatic38mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
Heartlander Automatic40h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
Heartlander Automatic101m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
Heartlander Automatic$600
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

5 specs
Category
Field
Diver
Diameter
38mm
44mm
Thickness
11.2mm
13mm
Lug-to-Lug
46mm
49.3mm
Water Resistance
101m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Miyota 9039
8L35
Power Reserve
40h
50h
Jewels
25
26

Pricing

1 specs
MSRP
$600
$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.

Dryden Heartlander Automatic

The Dryden Heartlander Automatic is widely praised for its versatility, comfortable 38mm case that wears smaller than its dimensions suggest, and excellent dial variety. Reviewers highlight its value at $500, noting good finishing, a domed sapphire crystal, and 100m water resistance. The tapering bracelet with solid links is also considered comfortable. One owner notes the crown may protrude slightly and irritate some wearers. On balance, owners and reviewers rate the Dryden Heartlander Automatic highly for its combination of wearability, features, and value.

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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